Brick

A Clay brick is the result of smelting clay in a furnace. They can be crafted into brick blocks when arranged in a 2×2 box on the crafting screen, meaning it is possible from your inventory. These blocks are mostly for looks, but can be used as a construction block or a pointless piece of rock. Making bricks is the only use of clay at the time, but Notch may add more later in Beta.

One clay block will yield enough clay for four Clay Bricks, which in turn is enough for one Brick block.

Crafting
Lehmziegel