Hardened Clay

Hardened Clay is a hard block in Minecraft used for decoration. If you look closely, you will find that is has the same texture as stone, but brownish. You can get Hardened clay by smelting clay blocks.

Recipe
Smelting in a furnace; Top Slot: Clay. Bottom Slot: Fuel = 1 Hardened Clay.

Uses
Hardened is only used to make stained clayor for decoration.

As a crafting ingredient
= 8 Stained Clay (color depending on what dye you used).