POURS

3

Rwanda Lake Kivu

Designed for: Malt Candy · Floral Hints

Zero Coffee · Rwanda Lake Kivu

Washed Process · Light

Pour Sequence · 3 Pours

Extraction Strategy

Balanced extraction

Mixed signals from process and tasting notes call for equilibrium. No single parameter is pushed to its limit. The recipe finds the centre of each range and holds it steadily across all five pours.

Bean Character

Dense bean — elevated growing altitude

High cell-wall resistance limits water penetration — grind -4 from roast baseline. Bloom and temperature offset upward to compensate. Reduces uneven saturation risk across the bed.

Engine Calibration

Brew Method · Drip on Ice

Concentrated brew — ice restores balance as it melts

Brewing 165ml of hot water directly onto 60g of ice. The pour targets 27% above equivalent hot-serve concentration — ice melts into the cup and dilutes the brew to its correct strength. Grind is tuned finer than a hot extraction at this ratio: ice melt reduces extraction efficiency, so the recipe pre-compensates with increased surface area.

Balanced extraction

Dense high-altitude beans

Layered extraction

Even saturation

Grind · 38

Fine grind — high extraction contact

Looks like standard table salt or fine sea salt. Derived from Stage 1 range 38–46. Density correction: -4 (finer) for dense bean. Keeps extraction within range. History pattern: -2. Minor — does not override bean constraints.

Bloom · 40s

Short bloom — low CO₂, fast saturation

40s base — derived from bean density and process. Insufficient bloom causes channelling across all subsequent pours.

Temp · 91→91°C

Near-isothermal extraction

Starts at 91°C — upper bound of Stage 1 range. Descends 0°C per pour as solubles concentration drops.

Pour Structure · 3 Pours

Three-pour structure — direct extraction

Light roast targets F1 range 4–5. Bean density (dense) favours more pours.

Learning · From Your History

Calibrated from your brewing history

Grind shifted finer by 2. Pattern was weak but consistent across recent brews. Minor adjustment applied. Effect is limited and does not override bean constraints.