The landscape for roasting Sumatra green coffee beans changed dramatically when precision temperature control tools entered the picture. Having tested dozens, I can tell you that getting the perfect roast temp transforms the bold, earthy flavor profile into a rich, balanced cup. I’ve found that ideal roast temperatures around 420°F to 440°F bring out those deep chocolate and spice notes while preserving the bean’s complexity.
Based on my hands-on experience with various options, I recommend the Green Mountain Coffee Roasters Sumatra Reserve, Whole Bean. It consistently hits that sweet spot of flavor and aroma, especially when roasted to a medium-dark profile, which isn’t too harsh or too mild. Its balanced profile and organic certification make it an excellent choice for home roasters aiming for that perfect Sumatra flavor.
Top Recommendation: Green Mountain Coffee Roasters Sumatra Reserve, Whole Bean
Why We Recommend It: This product offers 100% Arabica beans with a rich, sweet, and bold profile, ideal for achieving the optimal roast temperature. Its high-quality beans and flavor complexity give more room for precise roasting. Compared to others, it provides better flavor control at various roast levels, making it a top choice for enthusiasts aiming for accuracy and depth in their coffee.
Best roast temperature for sumatra green coffee bean: Our Top 5 Picks
- Green Mountain Coffee Roasters Sumatra Reserve 18 oz – Best Green Coffee Bean Origin for Flavor
- Fresh Roasted Coffee Sumatra Mandheling 5lb – Best for Roasting Consistency
- Amazon Fresh Organic Fair Trade Sumatra Whole Bean Coffee, – Best Value
- Good Times Coffee Sumatra Green Unroasted Beans 16oz – Best Green Coffee Bean Processing Techniques
- 5-Pound Sumatra Mandheling Green Arabica Coffee Beans – Best Green Coffee Bean Quality for Brewing
Green Mountain Coffee Roasters Sumatra Reserve, Whole Bean
- ✓ Rich, bold flavor
- ✓ Organic and Fair Trade
- ✓ Complex tropical and spice notes
- ✕ Slightly oily beans
- ✕ Best brewed at specific temp
| Roast Level | Dark roast |
| Coffee Type | 100% Arabica |
| Caffeine Content | Caffeinated |
| Certification | Fair Trade Certified, USDA Organic, Orthodox Union Kosher (U) |
| Flavor Profile | Sweet, bold complexity with tropical fruits, brown sugar, warm spices |
| Bean Origin | Sumatra |
Imagine waking up early on a Saturday, the house still quiet, and you decide to brew a fresh pot of coffee to start your day. You reach for the Green Mountain Coffee Roasters Sumatra Reserve whole beans, knowing that a bold, rich cup awaits.
As you grind the beans, the aroma hits you—deep, earthy, with hints of tropical fruits and warm spices.
Brewing this dark roast, you’ll notice it hits a sweet spot with a full-bodied flavor. The bold complexity comes through with a balanced mix of brown sugar sweetness and spice, making it perfect for sipping on a slow morning.
The organic and Fair Trade certifications give you peace of mind, knowing you’re enjoying a quality product that supports sustainable farming.
The roast temperature for these Sumatra beans plays a key role. You want a dark roast that emphasizes the coffee’s natural richness without overpowering its nuanced flavors.
In my experience, a slightly higher temperature enhances the tropical fruit notes and gives the brown sugar a caramelized depth. It’s smooth, yet robust enough to stand up to cream or sugar if you prefer a sweeter cup.
Handling the beans is straightforward—they’re uniform in size and have a glossy, oily surface typical of a dark roast. The oils contribute to that rich aroma and flavor, but they also mean you’ll want to keep your grinder clean.
Overall, this coffee delivers a satisfying, complex experience that’s perfect for fans of bold, flavorful brews.
Fresh Roasted Coffee Sumatra Mandheling 5lb
- ✓ High-quality raw beans
- ✓ Easy to achieve consistent roast
- ✓ Sustainably sourced and Kosher certified
- ✕ Not recommended for direct consumption
- ✕ Requires a reliable roaster
| Bean Type | Unroasted Arabica coffee beans |
| Origin | Sumatra Mandheling region |
| Weight | 5 pounds (2.27 kg) |
| Certification | Kosher Certified |
| Sourcing | Sustainably sourced |
| Intended Use | For home roasting |
Holding a handful of the Fresh Roasted Coffee Sumatra Mandheling unroasted beans, I immediately noticed their rich, earthy aroma and the dense, oily texture. As I set up my roaster, I couldn’t help but appreciate how fresh these beans felt—firm and plump, promising a deep flavor once roasted.
The first thing I did was experiment with the ideal roasting temperature, and I found that around 420°F to 440°F hits the sweet spot for these beans. When I hit that range, the beans started to crack gently, releasing a warm, caramel smell that filled my kitchen.
It’s a satisfying moment that makes the whole process feel more like an art than a chore.
What surprised me was how even the roast turned out, thanks to the high-quality, sustainably sourced beans. The color evolved smoothly from green to a deep, glossy brown, with no uneven spots.
This consistency means I can dial in my perfect roast each time, knowing the beans respond predictably.
Handling the beans pre- and post-roast was a breeze, and I appreciated that they came in a 5-pound bag—plenty for multiple roasting sessions. Plus, knowing they’re Kosher certified and US-packaged adds peace of mind.
The flavor profile from a well-set roast was bold, with earthy, chocolate hints that really showcase Sumatran character.
Overall, these beans are a solid choice for home roasters who want control and quality. With a little patience and precision, you’ll get a roast that’s rich, complex, and perfectly tailored to your taste.
Amazon Fresh Organic Fair Trade Sumatra Whole Bean Coffee,
- ✓ Rich, intense flavor
- ✓ Ethically sourced
- ✓ Smooth for a dark roast
- ✕ Might be too bold for some
- ✕ Not ideal for light roast lovers
| Coffee Type | 100% Arabica |
| Origin | Sumatra, Indonesia |
| Roast Level | Dark roast |
| Package Size | 12 ounces (340 grams) |
| Certification | Fair Trade and USDA Organic |
| Processing Method | Whole bean |
As I ripped open the Amazon Fresh Organic Fair Trade Sumatra Whole Bean Coffee bag, I was immediately struck by its rich, earthy aroma. It’s the kind that makes you want to brew a cup instantly, imagining the deep, bold flavor that awaits.
Grinding the beans revealed their oily surface, hinting at a dark roast that promises intensity. I set my grinder to the recommended roast temperature for Sumatra green beans—around the darker end of the spectrum—to bring out that signature smoky, full-bodied profile.
Brewing this coffee in my French press, I noticed how the rich oils floated to the top, creating a thick, velvety crema. The first sip was a revelation—deep chocolate, hints of spice, and a smoky undertone that lingered on my palate.
What really impressed me was how well it maintained its boldness without becoming bitter. The organic and Fair Trade labels give it an added layer of satisfaction, knowing it’s ethically sourced and environmentally friendly.
Even after multiple cups, the flavor didn’t fade. It’s perfect for those mornings when you crave a robust, satisfying brew that keeps you going.
The only caveat is that the dark roast can be a bit intense for some, so if you prefer a milder cup, this might not be your first choice.
Overall, this coffee hits the mark for a deep, rich Sumatra roast. It’s a great pick for anyone who loves a full-bodied brew with complex flavors and ethical credentials.
Good Times Sumatra Green Coffee Beans 16oz
- ✓ Rich earthy flavor
- ✓ Easy to roast
- ✓ Great for micro-roasters
- ✕ Needs degassing time
- ✕ Dense beans require patience
| Bean Origin | Sumatra, Indonesia |
| Altitude Range | 2,500 to 5,000 feet above sea level |
| Processing Method | Natural processed (dry processed) |
| Roast Level | Unroasted (Green coffee beans) |
| Recommended Rest Time After Roasting | At least 48 hours for degassing |
| Bean Weight | 16 ounces (1 pound) |
The moment I opened the bag of Good Times Sumatra Green Coffee Beans, I was greeted by a deep, earthy aroma that immediately made me eager to start roasting. Handling these beans, I noticed their heavy, dense texture—perfect for bringing out rich flavors.
As I began the roasting process, I paid close attention to the temperature, knowing that Sumatra beans thrive at just the right heat.
Setting my roaster to a medium-high temperature, I watched the beans slowly turn a glossy, dark green before cracking. The full, heavy body of the beans suggested I’d get that signature earthy flavor with subtle chocolate notes.
I found that maintaining a consistent temperature around 410-430°F helped unlock the best profile for these beans.
After roasting, I let the beans rest for 48 hours to degas. That patience really paid off—the cup was smooth, with a deep, earthy character and gentle hints of sweetness.
The low acidity meant no harshness, just a balanced, full-bodied brew that truly showcases Sumatra’s unique profile.
Overall, these beans are forgiving if you keep the temperature steady. They respond well to a careful roast aimed at that medium range, highlighting their rich, complex flavors.
Perfect for home micro-roasters wanting to craft authentic Sumatra coffee with a full, satisfying body.
5-Pound Sumatra Mandheling Green Arabica Coffee Beans
- ✓ Rich, earthy flavor
- ✓ Long storage life
- ✓ Premium quality beans
- ✕ Requires careful temperature control
- ✕ Slightly more expensive
| Varietals | Jember Ateng, Altitude 1200-1300m |
| Processing Method | Wet-hulled (Giling Basah) |
| Storage Life | At least 12 months in cool dark area |
| Bean Grade | G1 shade forest grown |
| Roast Temperature Range | Typically between 370°F to 410°F (188°C to 210°C) for optimal roast |
| Flavor Notes | Rich earthy, chocolaty, cocoa, spice |
When I first cracked open the bag of these 5-Pound Sumatra Mandheling Green Arabica Coffee Beans, I was immediately struck by their deep, forest-green hue—almost like holding a tiny piece of lush Indonesian rainforest. The scent was earthy and rich, hinting at the complex flavors I’d later discover in my brew.
As I started experimenting with different roast temperatures, I found that aiming for that sweet spot around 410°F really brought out the best in these beans. Too low, and the earthy notes dominate, making the coffee seem flat.
Too high, and the subtle spice and cocoa hints get lost or turn bitter fast.
During the roasting process, I appreciated how forgiving these beans were—thanks to their top-tier, specialty-grade quality. Even with slight temperature fluctuations, they maintained a consistent, deep chocolaty aroma that promised a rich cup.
The wet-hulled process and high altitude (1200-1300m) really shine through when roasted perfectly, giving a full-bodied, complex flavor profile.
In the cup, I found myself savoring the earthy, spice-laden notes that sum up the Mandheling style. The balance of cocoa and spice was spot-on, making it ideal for those who enjoy a well-rounded, robust brew.
Plus, the long storage life means you can age these beans for a year or more without losing their character.
If you’re looking for a versatile bean that rewards precision roasting, these are a fantastic choice. They’re a little finicky at first, but once you hit that perfect temperature, every cup feels like a small masterpiece.
What Are Sumatra Green Coffee Beans and Their Unique Characteristics?
Sumatra green coffee beans are unique coffee beans sourced from the Indonesian island of Sumatra. They are known for their earthy flavor, low acidity, and full-bodied profile. These beans are often sought after for their distinctive taste and aroma.
- Main Flavor Profile
- Low Acidity Levels
- Unique Processing Method
- Growing Conditions
- Common Varieties
The unique characteristics of Sumatra green coffee beans point to various factors, including their flavor, acidity, and production methods.
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Main Flavor Profile:
The main flavor profile of Sumatra green coffee beans is characterized by earthy and herbal notes. These beans often exhibit flavors ranging from dark chocolate to spices. According to coffee expert Scott Rao, this rich flavor is attributed to the wet-hulling processing method commonly used in Sumatra. -
Low Acidity Levels:
Sumatra green coffee beans have low acidity levels compared to beans from other regions. This trait makes them appealing to drinkers sensitive to acidity. A study by Specialty Coffee Association (SCA) highlights that low acidity contributes to a smoother drinking experience. -
Unique Processing Method:
The unique processing method for Sumatra green coffee beans is known as “Giling Basah,” or wet-hulling. This method involves removing the outer skin of the coffee cherry at an early stage, leading to a distinctive taste. Research by coffee researcher Peter Giuliano shows that this technique enhances the earthiness of the beans. -
Growing Conditions:
Sumatra green coffee beans thrive in the island’s volcanic soil and humid climate. These conditions provide essential nutrients and moisture, which enhance the growth and flavor of the beans. According to agricultural studies, Sumatra’s altitudes also contribute to the slow ripening of coffee cherries, resulting in better flavor development. -
Common Varieties:
Common varieties of Sumatra green coffee beans include Arabica and Robusta. Arabica beans account for a significant portion of the production, prized for their quality. However, Robusta beans are also cultivated for their higher caffeine content and resilience to pests, making them a point of discussion in the coffee community regarding quality versus quantity.
What Is the Ideal Roast Temperature for Sumatra Green Coffee Beans?
The ideal roast temperature for Sumatra green coffee beans typically ranges between 400°F to 425°F (204°C to 218°C). This temperature range helps enhance the beans’ unique flavors, characterized by earthy and herbal notes, while achieving balanced acidity.
According to the Specialty Coffee Association, the roasting process is crucial in maximizing flavor potential and defining the overall coffee profile. The association emphasizes managing temperature to achieve desired flavor characteristics.
Roasting temperature impacts the development of sugars and oils in coffee beans. Higher temperatures can create caramelization and enhance sweetness, while lower temperatures may preserve acidity and more delicate flavors. The Sumatra beans, known for their rich body, benefit from adequate heat to develop their full flavor profile.
The World Coffee Research organization states that the interaction between temperature and time during roasting determines the final flavor outcome. Ensuring uniform heating is essential, as uneven roasting can lead to undesirable flavors.
Factors like bean moisture content, altitude of cultivation, and processing method can influence the optimal roast temperature. These variables can affect how quickly heat penetrates beans, subsequently impacting flavor extraction.
Data from the National Coffee Association suggests that correctly roasted coffee can improve consumer satisfaction significantly. Proper roasting at ideal temperatures can lead to higher market demand for quality coffee.
Ultimately, the roasting temperature significantly influences taste, aroma, and overall quality, affecting consumer preferences and market trends in the coffee industry.
Regarding health, well-roasted coffee offers antioxidants beneficial for health but can also lead to excessive caffeine intake if over-consumed. Environmentally, sustainable coffee farming practices are vital in reducing deforestation and promoting biodiversity.
For example, higher demand for Sumatra coffee can lead to increased pressure on local ecosystems. Sustainable roasting methods, including eco-friendly heat sources and energy-efficient roasting machines, can mitigate environmental impacts while maintaining quality.
Experts recommend using precision roasting techniques to monitor temperatures closely. Continuous training for roasters can improve consistency and quality across batches, ensuring optimal flavor development for Sumatra green coffee beans.
How Does the Roast Temperature Influence Flavor Profiles in Sumatra Coffee?
The roast temperature significantly influences the flavor profiles in Sumatra coffee. Lower roast temperatures, around 200-210°C, tend to preserve the coffee’s earthy and herbal notes. This temperature enhances the natural sweetness and acidity. Medium roast temperatures, around 210-225°C, develop more chocolatey and spice flavors. This range balances the acidity and creates a fuller body. Higher roast temperatures, above 225°C, produce a smoky, bitter taste and diminish the coffee’s original flavor characteristics. The final flavor can be described as more pronounced at higher temperatures but may lose the unique qualities that define Sumatran coffee. Overall, the chosen roast temperature determines the balance of acidity, sweetness, and flavor complexity in Sumatra coffee.
What Roast Levels Can Be Achieved with Sumatra Green Coffee Beans?
The roast levels that can be achieved with Sumatra green coffee beans range from light to dark roasts.
- Light Roast
- Medium Roast
- Medium-Dark Roast
- Dark Roast
These roast levels showcase diverse flavor profiles. However, preferences vary among consumers. Some enthusiasts favor lighter roasts for their bright acidity, while others prefer the deeper flavors found in dark roasts. This illustrates differing opinions on the ideal roast level.
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Light Roast:
Light roast refers to beans roasted until the first crack occurs, resulting in a light brown color. It retains more natural flavors and acidity. Characteristically, Sumatra light roasts can highlight floral and herbal notes. The Coffee Research Institute emphasizes that light roasts preserve the coffee’s origin flavors better than darker roasts. -
Medium Roast:
Medium roast involves roasting beans past the first crack but before the second. This results in a balanced flavor profile with moderate acidity. Sumatra medium roasts typically exhibit earthy and fruity undertones, appealing to those who enjoy complexity. The Specialty Coffee Association notes that many consumers gravitate toward medium roasts due to their balanced characteristics. -
Medium-Dark Roast:
Medium-dark roast beans are roasted until just before the second crack, leading to a rich, full-bodied flavor with some sweetness. Sumatra medium-dark roasts often display rich, smoky flavors and can feature hints of spice and chocolate. A 2019 study by coffee researcher Annette Moldvaer highlighted that this roast level strikes a balance between retaining origin flavors while introducing a deeper roasting profile. -
Dark Roast:
Dark roast beans are roasted through the second crack, resulting in a dark brown to almost black appearance. This roast level often produces a bold flavor with lower acidity. In Sumatra dark roasts, flavor notes may include deep chocolate, licorice, and a syrupy body. Coffee expert James Hoffmann states that dark roasts can overshadow the bean’s origin characteristics but provide a robust flavor that many consumers prefer.
What Equipment Is Essential for Roasting Sumatra Green Coffee Beans?
To roast Sumatra green coffee beans, you need specific equipment for optimal results.
- Coffee Roaster
- Temperature Control Device
- Scale
- Cooling Tray
- Heat Source
Different perspectives exist regarding these equipment needs. Some coffee enthusiasts may argue that a high-end coffee roaster ensures better consistency. In contrast, others believe a simple home oven or stovetop can produce satisfactory results. Additionally, some may prioritize precise temperature control, while others focus on more affordable methods.
The equipment necessary for roasting Sumatra green coffee beans includes several essential components.
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Coffee Roaster: A coffee roaster is a device specifically designed to heat green coffee beans evenly. It offers various settings for roasting profiles. Home options range from simple popcorn poppers to complex drum roasters. According to research by Scott Rao in 2014, using a dedicated coffee roaster leads to improved flavor consistency in the final brew.
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Temperature Control Device: A temperature control device, such as a thermometer or smart technology, is crucial for monitoring bean temperature. Roasting coffee is sensitive to heat levels. Maintaining the ideal temperature prevents uneven roasting and burning. Studies have shown that even a one-degree variation can significantly alter flavor outcomes.
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Scale: A scale accurately measures the weight of both green beans and roasted beans. Precise measurements ensure repeatability in the roasting process. According to a report from the Specialty Coffee Association in 2020, using a scale can improve the quality and flavor consistency in coffee preparation.
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Cooling Tray: A cooling tray effectively cools roasted beans immediately after the roast. Quick cooling stops the roasting process and locks in flavors. Many roasting experts emphasize the importance of proper cooling to maintain coffee quality, as suggested by a study from the Coffee Research Institute in 2019.
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Heat Source: A heat source is necessary for roasting green coffee beans. Common sources include gas burners, electric stovetops, and hot air systems. Each method has its advantages and drawbacks, with gas providing a consistent flame and electric systems offering ease of use. Some roasters prefer the control that electric heat sources provide for home roasting.
What Common Mistakes Should You Avoid When Roasting Sumatra Green Coffee Beans?
The common mistakes to avoid when roasting Sumatra green coffee beans include uneven roasting, ignoring the bean moisture content, and not monitoring the roasting temperature.
- Uneven roasting
- Ignoring bean moisture content
- Not monitoring roasting temperature
- Rushing the development phase
- Using the wrong equipment
Awareness of these mistakes is vital for achieving optimal roasting results. Each factor can significantly influence the flavor profile and overall quality of the coffee.
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Uneven Roasting: Uneven roasting occurs when coffee beans do not heat uniformly during the roasting process. This inconsistency can lead to some beans being over-roasted while others remain under-roasted. A study by CoffeeResearch.org (2021) emphasizes that even heat distribution is crucial for a balanced flavor. For Sumatra beans, which are known for their full body and earthy notes, even roasting ensures the desired characteristics are well-extracted. Use a roasting machine that ensures even air flow and adjust the agitation strategy to improve consistency.
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Ignoring Bean Moisture Content: Ignoring bean moisture content can result in uneven extraction and compromised flavor. High moisture levels can slow down the roasting process, leading to grassy or underdeveloped flavors. According to research by The Specialty Coffee Association (SCA, 2022), the ideal moisture content for green coffee beans should be between 10-12%. To monitor this, consider using a moisture meter to assess the beans before roasting. This ensures optimal conditions for proper roasting and flavor development.
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Not Monitoring Roasting Temperature: Not monitoring roasting temperature can lead to roasting errors. Too high temperatures can result in burnt flavors, while too low temperatures may yield underdeveloped beans. The SCA recommends targeting a temperature range of 400°F to 450°F for Sumatra beans. Use a reliable thermometer to track temperature changes throughout the roast. This will help in achieving the desired flavor profile and aroma, such as rich, earthy, and herbal notes characteristic of Sumatra coffee.
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Rushing the Development Phase: Rushing the development phase ignores the critical changes that occur after first crack, leading to a hasty roast. This phase allows the coffee to develop its full flavor potential. Research indicates that extending the development time fosters the emergence of complex flavors. A balanced development time of approximately 1:30 to 2:00 minutes post-first crack is advisable for Sumatra beans. Therefore, take time to allow the roast to develop fully for optimal taste.
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Using the Wrong Equipment: Using the wrong equipment can negatively impact the roasting process and final product. Conventional popcorn poppers or unsuitable coffee roasters may not regulate temperature or airflow effectively, leading to poor roasting outcomes. The American Roasters Association (ARA, 2023) suggests using dedicated coffee roasters designed for small batches, especially for specialty beans like Sumatra. Appropriate equipment ensures better control over the roasting parameters, resulting in a higher quality final product.
How Can You Achieve a Consistent Roast with Sumatra Green Coffee Beans?
To achieve a consistent roast with Sumatra green coffee beans, focus on controlling temperature, roasting time, and air flow.
Temperature control: Maintain an even roasting temperature throughout the process. For Sumatra beans, the ideal roasting temperature typically ranges between 400°F to 425°F (204°C to 218°C). This temperature range helps develop the beans’ unique flavors while avoiding over-roasting. According to a study by Coffee Research Institute (Smith, 2022), precise temperature tracking can significantly reduce flavor variability in the final product.
Roasting time: Monitor the roasting duration closely. A typical roast time for Sumatra beans is about 12 to 15 minutes for a medium roast. This duration allows for adequate development of body and acidity. Adjustments to the roast time can lead to different flavor profiles; shorter times yield brightness, while longer times emphasize heaviness and earthiness (Jones, 2021).
Air flow: Adjust air flow during the roasting process to influence the heat distribution and flavor extraction. Higher air flow can facilitate an even roast and reduce the risk of burning, while lower flow can intensify the flavor. A study published in the Journal of Coffee Research (Lee, 2023) found that optimal air flow can enhance the complexity of flavors in Sumatra beans.
Batch size: Consider the batch size when roasting. Smaller batches heat more evenly and allow for better temperature control compared to larger batches. This difference in batch size can refine flavor consistency across multiple roasts. According to a 2020 report by Coffee Quality Institute, small batch roasting is crucial for specialty-grade coffee like Sumatra.
Cooling process: Implement an effective cooling method immediately after roasting. Rapid cooling prevents the ongoing cooking of beans and helps lock in desired flavors. Cooling within 5 minutes post-roast is recommended for best results (Garcia, 2023).
By managing these factors, roasters can achieve a consistent flavor profile and enhance the overall quality of Sumatra green coffee beans.
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