Games/Minetest Game/Smelting

Smelting—also called Cooking—is the act of producing refined goods in Minetest Game with a specal block (like a furnace or similar).

Smelting basics

In Minetest Game, smelting is considered to be a form of crafting.

For smelting or cooking, you need:

Any fuel item
An item which can be smelted/cooked
Some mechanism to start smelting (like a furnace)

Fuels are always required in order to produce a flame. Coal and wooden items are commonly used as fuels. Any fuel can be used to smelt anything as long it is burning long enough. Each fuel has its own duration. Fuels are usually used up when the smelting process starts, but for some special items they might be replaced with different item.

Smeltable items are determined by smelting recipes. A smeltable item needs to be provided with the fuel's flame for a certain amount of time (the exact time depends on the item) to be smelted into a different item.

Example

Iron lumps in Minetest Game can be smelted in 3 seconds. This means, to smelt an iron lump, you need a total amount of fuel lasting for 3 seconds or more. Many items burn long enough. You could use a coal lump (which would be wasteful) or wooden planks (which is less wasteful) or pretty much any other fuel item. If a single fuel item does not burn enough, you have to stack it (but there's a short delay before the next fuel is used). Thus, you can even use 3 leaves.

Furnace

In Minetest Game, the furnace is used for all smelting operations. Refer to the Furnace page to learn how it works. This section contains the available smelting recipes and fuels in Minetest Game.

Smelting recipes

The following items can be smelted/cooked:

Input	Output	Smelting time
Flour	Bread	15s
Cobblestone	Stone	3s
Mossy Cobblestone	Stone	3s
Desert Cobblestone	Desert Stone	3s
Clay Lump	Clay Brick	3s
Iron Lump	Steel Ingot	3s
Empty Heavy Steel Bottle	Steel Ingot	3s
Copper Lump	Copper Ingot	3s
Tin Lump	Tin Ingot	3s
Gold Lump	Gold Ingot	3s
Skeleton Key	Gold Ingot	5s
Key	Gold Ingot	5s
Any sand	Glass	3s
Glass Fragments	Glass	3s
Obsidian Shard	Obsidian Glass	3s

Fuel

The following items can be used as fuel:

	Item	Burning time in seconds	Items smelted per fuel^[1]	Remainder
	Coal Block	370	123⅓	Nothing
	Lava Bucket	60	20	Empty Bucket
	Lava Source	60	20	Nothing
	Coal Lump	40	13⅓	Nothing
	Jungle Tree	38	12⅔	Nothing
	Acacia Tree	34	11⅓	Nothing
	Apple Tree	30	10	Nothing
	Any tree (fallback)	30	10	Nothing
	Locked Chest	30	10	Nothing
	Chest	30	10	Nothing
	Bookshelf	30	10	Nothing
	Vessels Shelf	30	10	Nothing
	Pine Tree	26	8⅔	Nothing
	Aspen Tree	22	7⅓	Nothing
	Boat	20	6⅔	Nothing
	Cactus	15	5	Nothing
	Wooden Door	14	4⅔	Nothing
	Fancy Bed	13	4⅓	Nothing
	Simple Bed	12	4	Nothing
	Wooden Sign	10	3⅓	Nothing
	Jungle Wood Planks	9	3	Nothing
	Jungle Wood Fence	9	3	Nothing
	Jungle Wood Fence Gate	9	3	Nothing
	Acacia Wood Fence Gate	8	2⅔	Nothing
	Acacia Wood Fence	8	2⅔	Nothing
	Acacia Bush Stem	8	2⅔	Nothing
	Acacia Wood Planks	8	2⅔	Nothing
	Apple Wood Fence Gate	7	2⅓	Nothing
	Wooden Ladder	7	2⅓	Nothing
	Jungle Wood Fence Rail	7	2⅓	Nothing
File:Inner Acacia Wood Stair.png	Inner Acacia Wood Stair	7	2⅓	Nothing
	Apple Wood Fence	7	2⅓	Nothing
	Emergent Jungle Tree Sapling	7	2⅓	Nothing
File:Inner Jungle Wood Stair.png	Inner Jungle Wood Stair	7	2⅓	Nothing
	Bush Stem	7	2⅓	Nothing
	Apple Wood Planks	7	2⅓	Nothing
	Any wooden planks (fallback)	7	2⅓	Nothing
	Wooden Trapdoor	7	2⅓	Nothing
	Wooden Pickaxe	6	2	Nothing
	Pine Wood Fence Gate	6	2	Nothing
	Acacia Wood Stair	6	2	Nothing
	Acacia Tree Sapling	6	2	Nothing
File:Inner Wooden Stair.png	Inner Wooden Stair	6	2	Nothing
	Pine Bush Stem	6	2	Nothing
	Pine Wood Planks	6	2	Nothing
	Jungle Tree Sapling	6	2	Nothing
	Jungle Wood Stair	6	2	Nothing
	Acacia Wood Fence Rail	6	2	Nothing
	Pine Wood Fence	6	2	Nothing
	Wooden Axe	6	2	Nothing
	Aspen Wood Planks	5	1⅔	Nothing
	Wooden Sword	5	1⅔	Nothing
	Large Cactus Seedling	5	1⅔	Nothing
	Aspen Wood Fence Gate	5	1⅔	Nothing
	Apple Wood Fence Rail	5	1⅔	Nothing
File:Inner Pine Wood Stair.png	Inner Pine Wood Stair	5	1⅔	Nothing
	Wooden Stair	5	1⅔	Nothing
	Apple Tree Sapling	5	1⅔	Nothing
	Pine Tree Sapling	5	1⅔	Nothing
	Any sapling (fallback)	5	1⅔	Nothing
	Aspen Wood Fence	5	1⅔	Nothing
	Wooden Hoe	5	1⅔	Nothing
	Mapping Kit	5	1⅔	Nothing
	Blueberry Bush Sapling	5	1⅔	Nothing
File:Outer Jungle Wood Stair.png	Outer Jungle Wood Stair	5	1⅔	Nothing
File:Outer Acacia Wood Stair.png	Outer Acacia Wood Stair	5	1⅔	Nothing
File:Inner Aspen Wood Stair.png	Inner Aspen Wood Stair	4	1⅓	Nothing
	Acacia Wood Slab	4	1⅓	Nothing
	Any leaves	4	1⅓	Nothing
	Pine Wood Fence Rail	4	1⅓	Nothing
	Aspen Tree Sapling	4	1⅓	Nothing
	Acacia Bush Sapling	4	1⅓	Nothing
File:Outer Wooden Stair.png	Outer Wooden Stair	4	1⅓	Nothing
	Jungle Wood Slab	4	1⅓	Nothing
	Wooden Shovel	4	1⅓	Nothing
	Torch	4	1⅓	Nothing
	Pine Wood Stair	4	1⅓	Nothing
	Jungle Grass	3	1	Nothing
	Aspen Wood Fence Rail	3	1	Nothing
File:Outer Pine Wood Stair.png	Outer Pine Wood Stair	3	1	Nothing
	Bush Sapling	3	1	Nothing
	Wooden Slab	3	1	Nothing
	Papyrus	3	1	Nothing
	Straw	3	1	Nothing
	Pine Wood Slab	3	1	Nothing
	Aspen Wood Stair	3	1	Nothing
	Book	3	1	Nothing
	Book With Text	3	1	Nothing
File:Outer Aspen Wood Stair.png	Outer Aspen Wood Stair	3	1	Nothing
	Straw Stair	2	⅔	Nothing
File:Inner Straw Stair.png	Inner Straw Stair	2	⅔	Nothing
	Dry Shrub	2	⅔	Nothing
	Dry Grass	2	⅔	Nothing
	Marram Grass	2	⅔	Nothing
	Aspen Wood Slab	2	⅔	Nothing
	Pine Bush Sapling	2	⅔	Nothing
	Grass	2	⅔	Nothing
	Fern	2	⅔	Nothing
	Paper	1	⅓	Nothing
File:Outer Straw Stair.png	Outer Straw Stair	1	⅓	Nothing
	Straw Slab	1	⅓	Nothing
	Wheat	1	⅓	Nothing
	String	1	⅓	Nothing
	Cotton	1	⅓	Nothing
	Stick	1	⅓	Nothing