Direct answer

1× Coke → 1× Coke Powder in the Grinder, 12 seconds. It burns for 660 heat and sells as a sundry fuel, but the reason to build it is steel: 1× Iron Ingot + 1× Coke Powder → 1× Steel Ingot (25%) or 1× Iron Ingot (75%) in the Athanor, 4 seconds.

Recipe

FieldValueEvidence
DeviceGrinderDATAMINED
Input → Output1× Coke → 1× Coke PowderDATAMINED
Craft time12 sDATAMINED
Heat value660DATAMINED

Coke itself sits at the end of the wood line: Logs → 6× Plank → 6× Charcoal → 6× Charcoal Powder → Coke. So Coke Powder is a four-step derivative of a log. Build the chain, not the grinder alone.

The steel maths nobody mentions

The Athanor steel recipe is a 25% conversion. On average you need four iron ingots and four Coke Powder per steel ingot, and the three failures return iron (75% branch), so the loss is Coke Powder and time, not iron.

Practical consequence:

Coke Powder demand is four times what the steel output suggests. A steady two-steel-per-minute line needs eight Coke Powder per minute, which is eight Grinders unless a higher-tier grinder shares the load.

The other two uses

ProductDeviceRecipeTime
BrandyAlembic5× Coke Powder + 100× Fruit Wine → 40× Brandy5 s
Transformation PotionAssembler2× Coke Powder + 1× Gloom Spores → 1× Transformation Potion6 s

Brandy matters because Blast Potion needs 40 of it — so Coke Powder secretly feeds Black Powder twice over: once as the steel input and once through the brandy branch.

✓
Evidence boundary

Recipe, time, heat value and the 25%/75% steel split: DATAMINED from build 1.1.5024. The “four per steel” figure is arithmetic on the stated 25%, not a separate observation.

ℹ

Independent fan reference for Alchemy Factory. Game data refers to the current official 1.0 build (Steam, PC). Field-level evidence is flagged on each page with OFFICIAL / OBSERVED / COMMUNITY badges; amounts shown without a badge come from the official 1.0 patch notes or store descriptions.