Crafting
Crafting allows you to create new items out of crafting materials if you have learned the required recipe. You can craft anywhere by pressing the keybind to open the crafting window (L by default).
Crafting limitations
You can craft equipment only when you open the crafting window by interacting with an anvil.

Everything else can be crafted anywhere, however - crafting at a firepit increases the amount of potions and food you craft for the same amount of material by 20% (or by up to 30% if you use a crafting potion). The result is always rounded down so if you craft too little items, you will not get this bonus.

Crafting items
The crafting window is split into 3 main parts.
- Recipes
- Materials
- Result
Recipes

In this part, you can select a recipe to craft. You can filter through all unlocked recipes by typing their name into a search bar and by selecting their type (weapon, instant potions, food, etc..). Both filters are applied at the same time along with your selected sorting option.
You can also click the "clear filters" button to remove all filters and show all unlocked recipes sorted by name from A to Z.
Material

In this part, you can view the required material for crafting this recipe. The material shown here is what you need to craft one batch of items. The amount of items crafted in a single batch can be seen at the upper portion of this part. You can hover over each material's icon to see their tooltip with a brief information on how to obtain them. Each material also shows you on the right side the total amount you have in your inventory and the amount required to craft this batch.
You can also see all currently active filters at the bottom of this part.
Result

In this part, you can preview the item you're about to craft. You can also see how many times you can craft this item including whether you're limited by the material or by your inventory space.
"Craft" button crafts this item the amount of times that you've entered into the box above. It will craft the highest amount possible If it exceeds it.
"Craft all" button crafts this items as many times as you can.
If you're crafting a stackable item (E.g. Instant potions, food, etc..),they will try to fill up any non-filled stacks first before creating items in a new inventory slot.