Valheim processing guide: smelters, kilns, furnaces, fermenters and cooking stations
Valheim has a set of stations that turn one item into another, and each works to its own rules. This guide covers the smelter-type stations (fuel, capacity, time per product and what they convert), the fermenter, and the cooking stations with their slots, cook times and what happens to burnt food.
Smelters and processors
These stations hold a stack of input and, for most of them, a stock of fuel. They produce one item per interval.
| Station | Fuel | Holds input | Holds fuel | Fuel per product | Seconds per product |
|---|---|---|---|---|---|
| Smelter | Coal | 10 | 20 | 2 | 30 |
| Blast Furnace | Coal | 10 | 20 | 2 | 30 |
| Eitr Refinery | Sap | 20 | 20 | 1 | 40 |
| Frigid Kiln | Ice | n/a | 25 | 5 | 30 |
| Charcoal Kiln | none | 25 | n/a | n/a | 15 |
| Spinning Wheel | none | 40 | n/a | n/a | 30 |
| Windmill | none | 50 | n/a | n/a | 10 |
| Hot Tub | Wood | n/a | 10 | 1 | 5000 |
The Smelter and the Blast Furnace have identical fuel, capacity and timing. The Windmill is the fastest at 10 seconds per product and holds the most input at 50. The Hot Tub is the slowest at 5000 seconds.
Smelter
The Smelter burns Coal and handles the early and mid-game metals:
- Copper Ore to Copper
- Copper Scrap to Copper
- Tin Ore to Tin
- Iron Ore to Iron
- Scrap Iron to Iron
- Scrap Bronze to Bronze
- Silver Ore to Silver
Blast Furnace
The Blast Furnace also burns Coal, with the same capacity and speed as the Smelter. It handles:
Charcoal Kiln
The Charcoal Kiln makes Coal, the fuel the Smelter and Blast Furnace burn. It takes three inputs:
It holds 25 and produces one Coal every 15 seconds, which is quicker than the 30 seconds the Smelter and Blast Furnace need for each product.
Eitr Refinery
The Eitr Refinery turns Soft Tissue into Refined Eitr. It burns Sap, using 1 per product, and holds 20 of both input and fuel. Each product takes 40 seconds, the longest of the working smelter-type stations except the Hot Tub.
Frigid Kiln
The Frigid Kiln makes Liquid Frost. It burns Ice as fuel, 5 per product, and holds 25 Ice. Each product takes 30 seconds.
Spinning Wheel
The Spinning Wheel turns Flax into Linen Thread. It needs a roof. It uses no fuel, holds 40 and takes 30 seconds per product.
Windmill
The Windmill uses no fuel and holds 50. It grinds one product every 10 seconds:
Hot Tub
The Hot Tub burns Wood, 1 per product, and holds 10. Each product takes 5000 seconds.
Fermenter
The Fermenter works in batches. Each batch takes 40 minutes. Almost every recipe makes 6 items per batch. The exception is Mead base: Berserkir, which makes 3.
Cooking stations
Cooking stations cook several items at once, each in its own slot. At every cooking station, food left too long burns and becomes Coal.
| Station | Slots | Cook time |
|---|---|---|
| Cooking Station | 2 | 25 seconds for every recipe |
| Iron Cooking Station | 5 | 25 or 60 seconds |
| Stone Oven | 4 | 50 seconds for every recipe |
| Frost Foundry | 1 | 50 seconds for every recipe |
Cooking Station
With 2 slots, the Cooking Station cooks eight foods, each in 25 seconds:
- Boar Meat to Cooked Boar Meat
- Neck Tail to Grilled Neck Tail
- Raw Fish to Cooked Fish
- Deer Meat to Cooked Deer Meat
- Wolf Meat to Cooked Wolf Meat
- Chicken Meat to Cooked Chicken Meat
- Hare Meat to Cooked Hare Meat
- Bear Meat to Cooked Bear Meat
Iron Cooking Station
The Iron Cooking Station has 5 slots and cooks everything the Cooking Station does, plus more. Most recipes take 25 seconds:
- Raw Fish to Cooked Fish
- Boar Meat to Cooked Boar Meat
- Neck Tail to Grilled Neck Tail
- Deer Meat to Cooked Deer Meat
- Wolf Meat to Cooked Wolf Meat
- Chicken Meat to Cooked Chicken Meat
- Hare Meat to Cooked Hare Meat
- Volture Meat to Cooked Volture Meat
- Asksvin Tail to Cooked Asksvin Tail
- Bear Meat to Cooked Bear Meat
- Moose Meat to Cooked Moose Meat
Four recipes take 60 seconds:
- Serpent Meat to Cooked Serpent Meat
- Lox Meat to Cooked Lox Meat
- Seeker Meat to Cooked Seeker Meat
- Bonemaw Meat to Cooked Bonemaw Meat
Stone Oven
The Stone Oven has 4 slots. Every recipe takes 50 seconds:
- Unbaked Lox Pie to Lox Meat Pie
- Bread Dough to Bread
- Uncooked Fish 'n' Bread to Fish 'n' Bread
- Uncooked Meat Platter to Meat Platter
- Uncooked Honey Glazed Chicken to Honey Glazed Chicken
- Uncooked Misthare Supreme to Misthare Supreme
- Uncooked Stuffed Mushroom to Stuffed Mushroom
- Uncooked Roasted Crust Pie to Roasted Crust Pie
- Uncooked Piquant Pie to Piquant Pie
- Unbaked Sweetbread to Frosted Sweetbread
- Seal Blubber to Cooked Seal Blubber
- Oven Pancake Batter to Oven Pancake
- Raw Kale Chips to Kale Chips
- Unbaked Poteitr to Baked Poteitr
Frost Foundry
The Frost Foundry is counted among the cooking stations. It has a single slot and takes 50 seconds per cast. It casts:
- Weapons: Nord Sword, Nord Atgeir, Nord Greataxe, Nord Axe, Nord Bow, Nord Crossbow, Nord Knucklechains, Nord Dagger, Nord Sledge, Nord Mace, Nord Spear, Nord Greatsword
- Armor: Breastplate of the Protector, Trousers of the Protector, Helmet of the Protector, Hood of the Vanguard, Chestpiece of the Vanguard, Trousers of the Vanguard, Trousers of the Caller, Robes of the Caller, Headdress of the Caller
- Shields: Nord Buckler, Nord Shield, Nord Greatshield
- Other: Intricate Key, Spirit Caller, Echo Spike, Northern Vengeance, Lightning Strike
Each cast uses the recipe name "Cast:" followed by the item name, and the item is the output.
Written from the game data of Valheim 1.0.17, last updated October 9, 2026.