There is no real purpose to Unfired Steel as it is the middle of a three-part process to creating steel and is, in its state, unusable.
This is not so much a recipe as a series of steps. Follow the steps by number.
- Find, mine and place 'Iron Ore'.
- Find any flammable resource (foliage of any kind, 'Oil' or 'Coal'.)
- Place the flammable resource next to the Iron Ore and light it using 'Flint'.
- Wait until the 'Iron Ore' becomes 'Iron'.
- Bring the Iron to a 'Forge' and place it in the small forge.
- Retrieve the Unfired Steel from the forge.