What is Coffee Anaerobic Processing: What's the Difference Between Anaerobic Natural and Anaerobic Washed Coffee

Recently, it seems that coffee processing isn't considered innovative unless it involves some form of anaerobic treatment. In reality, anaerobic processing isn't particularly high-tech. Placing coffee cherries in a stainless steel barrel with a one-way valve allows carbon dioxide to continuously release while oxygen gets replaced—this qualifies as anaerobic. Similarly, placing cherries in a sealed bag and removing excess air also qualifies as anaerobic processing.

Therefore, the challenge with anaerobic processing isn't about implementation, but rather about control and management. In the beginning stages, anaerobic processing reduces oxygen participation, and when fermentation reaches a certain level, it inevitably brings out flavors reminiscent of stone fruits like peaches. As more people discovered this characteristic, major coffee-producing regions worldwide began to emulate the technique, and anaerobic processing gradually became popular globally.

Beyond delivering specific flavors, anaerobic processing can actually create a rich, smooth mouthfeel and aromas that enhance perceived sweetness, making the coffee seem "sweeter." As mentioned earlier, the core issue isn't whether anaerobic processing is used, but rather the precise control of fermentation degree is what truly matters.

Anaerobic Coffee Flavors: FrontStreet Coffee's Colombian Selection

To understand what flavors anaerobic coffee offers, let's examine several Colombian specialty coffee beans on FrontStreet Coffee's menu. Colombia boasts 11 different altitude ranges, each offering unique flavors that cannot be matched anywhere else in the world.

These Colombian coffees include:

FrontStreet Coffee's Colombian Flower Moon Night features anaerobic natural processing, with brewing notes of strawberry jam, fermented wine aroma, and chocolate.

FrontStreet Coffee's Colombian Rose Valley uses anaerobic enzyme washing, presenting brewing notes of rose, peach, and liqueur-filled chocolate.

FrontStreet Coffee's Colombian Hacienda El Paraiso Sakura undergoes double anaerobic washing, revealing brewing notes of mugwort, berries, fermentation aroma, spices, and strawberry jam.

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