POURS

4

Kyoho Bourbon Blend Nana Roaster

Designed for: Kyoho Grape · Whisky

Home Roast · Colombia

First brew estimate — rate it to improve

Yeast Innoculation · Medium

Pour Sequence · 4 Pours

Extraction Strategy

Fermentation character control

Anaerobic fermentation produces complex winey compounds that over-extract faster than standard beans. Every parameter is constrained — RPM ceiling enforced, agitation controlled, temperature conservative — to manage fermentation character without losing it.

Bean Character

Medium density — balanced extraction profile

Cell structure within standard extraction range. No density correction applied. Parameters follow roast and process constraints.

Engine Calibration

Brew Method · Drip on Ice

Concentrated brew — ice restores balance as it melts

Brewing 155ml of hot water directly onto 70g of ice. The pour targets 31% 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.

Fermentation control

Balanced density bean

Direct extraction

Active agitation

Grind · 46

Medium grind — balanced flow and contact

Looks like kosher salt or coarse table salt. Derived from Stage 1 range 48–58. Yeast Innoculation offset: -1 (finer). Limits over-extraction of process compounds. History pattern: -2. Minor — does not override bean constraints.

Bloom · 42s

Short bloom — low CO₂, fast saturation

37s base — derived from bean density and process. Insufficient bloom causes channelling across all subsequent pours.

Temp · 90→85°C

Descending curve — 5°C drop across pours

Starts at 90°C — upper bound of Stage 1 range. Descends 2°C per pour as solubles concentration drops.

Pour Structure · 4 Pours

Four-pour structure — balanced precision

Medium roast targets F1 range 4. Bean density (medium) neutral.

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.