Game mechanic
Furnace output space
A furnace stops cooking when the result slot holds a different item or has no room for the next result.
Rules
| Different item | Cooking stops if the result slot holds anything other than exactly the item being made: the same item with the same name, enchantments and other properties. |
| No room | Cooking stops if the next result would not fit on the stack, for example with 64 of an item that stacks to 64 already in the slot. |
| While blocked | Cooking progress is reset to zero and no new fuel is used. Fuel that is already burning keeps burning down. |
| Resuming | Cooking starts again from zero once the result slot has room. |