Mechanics
Stardew Valley 25 Ore Batch Smelting Rules Guide
For ore, Heavy Furnace consumes 25 ore and 3 Coal per run. Each batch has an equal chance to output 5 or 6 bars, so the average batch beats five ordinary furnace runs on both ore and Coal.
Route facts
- Category
- Mechanics
- Focus
- 25 ore, 3 Coal, and 5-6 bars
- Source
- https://stardewvalleywiki.com/Heavy_Furnace#Smelting
Checklist
- Use Heavy Furnace only when at least 25 matching ore and 3 Coal are ready.
- Expect either 5 or 6 bars from each ore batch rather than a fixed output.
- Use ordinary Furnaces for leftovers under 25 ore so small stacks do not sit idle.