How to Brew Coffee with a Juicy Mouthfeel? How to Brew Anaerobic Coffee? What Water Temperature for Pour-Over Coffee?

Understanding Anaerobic Coffee Processing

Compared with conventional processing methods, anaerobically processed coffee typically shows more intense and distinctive flavors (in most cases), because its fermentation runs deeper. FrontStreet Coffee's 90+ Eleta, for instance, features prominent longan, spice, and citrus notes, while FrontStreet Coffee's Boundary Manor Large Navel offers distinct blackcurrant and blueberry flavors.

Challenges in Brewing Anaerobic Coffee

Exceptional flavor or not, brewing anaerobic coffee well is no easy task. As FrontStreet Coffee has said many times, because of the beans' altered structure, many brewers get disappointing results when they apply their usual brewing routine — the cup often comes out thin or bland. In short, it falls short of enjoyable. So today, FrontStreet Coffee shares how to brew a great cup of anaerobic coffee.

Optimizing Grind Size for Anaerobic Coffee

The most common pitfall is under-extraction. When concentration and extraction yield fall short of target, the result is a thin body and weak flavor. The main culprit is usually the grind. Most people grind anaerobic beans the way they would any medium-light roast — at a conventional medium-fine setting. But anaerobic beans actually need a finer grind, because they don't hold water particularly well.

If you brew regularly, you've probably noticed that anaerobic coffee drains quickly — water poured over the bed rushes through the filter. That's because these beans have a looser structure. Most spend a long time steeping in sweetened liquid during processing, and during roasting that sugar coating drives more intense caramelization, leaving parts of the bean structure more porous and less able to retain water.

Faster drainage shortens contact time, lowers extraction efficiency, and makes full-bodied flavors hard to reach. Grinding finer fixes this in two ways at once: it increases the surface area of the coffee particles in contact with water, speeding the dissolution of flavor compounds, and the tighter particle packing slows drainage. One adjustment, two benefits. That's why FrontStreet Coffee always grinds anaerobic beans one setting finer than conventionally processed ones — for example, setting 10 for a medium-light Guji, versus setting 9.5 for an anaerobic Sidra.

Water Flow Techniques for Anaerobic Coffee

Beyond grind size, pour rate needs adjusting too, for two reasons. First, pour rate directly affects drainage speed: a faster pour finishes sooner and the bed drains faster, and vice versa. Slowing the pour extends contact time for a more thorough extraction — something grind adjustment alone can't fully accomplish.

Second, an anaerobic coffee bed is harder to raise, and with a heavy pour it's easy to over-saturate the bed and create bypass water. Easing off the pour rate also helps prevent that thin, watery mouthfeel.

Adjusting Coffee-to-Water Ratio

Heavily fermented coffees often carry savory notes reminiscent of fermented soybean paste. This happens when aroma compounds become too concentrated and mutate: The Science of Coffee Aroma gives the example of a fruit aroma that reads as peach at lower concentrations, but starts to smell like vomit once its concentration climbs past a certain point.

When aroma concentration runs this high, individual notes become hard to pick out — which is why anaerobic coffee can feel overwhelming to some. Its intense fermentation and spice flavors put many people off, whether smelling or tasting. If you prefer subtler flavors and lower concentration, FrontStreet Coffee recommends a 1:16 ratio or higher for heavily anaerobic coffees. More water dilutes the brew, softening the aromatics and flavors: the coffee becomes more approachable, and its finer qualities easier to detect.

Those are the extraction variables to watch with anaerobic coffees. Next, FrontStreet Coffee demonstrates a full brew.

Brewing Demonstration

The bean used here is FrontStreet Coffee's Boundary Manor Sidra, currently the best-selling heavily anaerobic coffee in their café — remarkably expressive in the cup and excellent value. The parameters: 15g dose; 1:15 coffee-to-water ratio; grind setting 9.5 on the Ek43 (75% pass-through on a #20 sieve, fine-sugar texture); 92°C water; three-pour method; V60 dripper.

Step-by-Step Brewing Process

Step one is the trusty bloom: twice the coffee weight in water, 30 seconds.

Once the bloom ends, pour from the center and spiral slowly outward to wet all the grounds, then use a gentle flow in large circles to add the second pour — 120ml of hot water for this segment.

After that pour, watch the drainage speed. If the bed is draining very fast, split the final pour into two segments or slow the flow even further to extend extraction. Once the second pour has mostly drained, use a gentle flow in small circles to add the third pour, totaling 75ml.

Then simply wait for the coffee to finish dripping into the server and lift off the dripper. Total brew time: 1 minute 55 seconds — still a touch shorter than a conventional extraction.

The finished Sidra opens with distinct grape, passion fruit, and apricot sweetness, laced with subtle florals and a hint of spice, over a smooth, full-bodied mouthfeel — genuinely like a rich grape juice. As it cools, the berry and grape acidity turns brighter while spice and chocolate notes come forward: layered, dynamic, and deeply satisfying.

FrontStreet Coffee Recommendation

Anaerobic and fruit-forward coffees shine brightest in a V60. The cone and 60° angle funnel every pour to the center, extending water-to-coffee contact so aroma and flavor extract fully, while the large single outlet rewards a skilled pour with vivid aromatics and lively acidity. For that style of brewing, FrontStreet Coffee recommends:

FrontStreet Coffee Ethiopia Yirgacheffe Worka Cooperative: A classic gateway to specialty coffee — bright citrus, berries, and florals with a green-tea-like sweetness. Its acidity is soft and fruity rather than sharp, making it an easy first pour-over.

FrontStreet Coffee Ethiopia Hibrix (Hua Kui): One of the biggest stars of recent years. Intense tropical fruit — strawberry, passion fruit, jackfruit, even lychee — with pronounced sweetness and almost no bitterness, often described as "the coffee that doesn't taste like coffee."

FrontStreet Coffee Strawberry Candy (Gesha-style profile): Rich in tropical fruit character with raisin-like sweetness, a natural fit for the V60's fast, aromatic extraction.

FrontStreet Coffee Kenya Cherry Tomato: A washed Kenyan from Thika, grown at 1550–1750 m from SL28 and SL34, double-wash-fermented for 72 hours (K72) and roasted light. Expect vivid cherry tomato and dried plum acidity with fresh-pressed-juice body, snow pear and black plum sweetness, and a clean finish of yellow sugar and soft green tea.

FrontStreet Coffee Colombia Pink Bourbon: From Boundary Manor (Finca La Divisia) at 1650–1800 m, double-anaerobic natural processed and roasted medium-light. Jasmine and citrus on the nose, then passion fruit, blueberry, grape, and apricot in a wave of juiciness, with a persistent cocoa finish. Equally at home as a pour-over, a single-origin espresso, or an iced brew — iced pouring brings out an especially crisp, smooth grape-juice character.