Black Glazed Terracotta is a craftable block in the Minecraft game and you can use it for decoration.
You will need Raw Clay, Clay Blocks, Terracotta using Furnace, Squid for Ink Sac and Black Terracotta to make Black Glazed Terracotta. Please follow the following steps to make Black Glazed Terracotta.
In order to make Terracotta, the basic item you need is Raw clay. You will have to find and get at least 32 raw clays. You can find them under the ocean.
After that you will have to craft clay blocks from Raw clays you have collected. Go towards the crafting table and add 32 clays in any four adjacent cells of 3*3 crafting grid, where each cell should contain 8 clays. You will get 8 clay blocks in the right side box of the crafting table, as 4 clays can make 1 clay block. Add these clay blocks into inventory.
Terracotta using Furnace
Now move towards the furnace to make terracotta. Add 8 clay blocks in the top box and coal in the lower box to get 8 terracotta as output in the right-side box of the furnace. Add these into your inventory.
Squid for Ink Sac
After that you have to find and kill squid to get ink sac. You will find them under water, use your iron sword to kill a squid.
Now you can craft black terracotta using the crafting table. Go back to the crafting table and open up 3*3 crafting grid. Add ink sac in the center cell and Eight Terracotta blocks in all remaining cells of the crafting grid, as shown in image below. You will get Eight Black Terracotta blocks in the right-side box of the crafting table. Add these into your “ready to use” stock.
Black Glazed Terracotta
Now you can make black glazed terracotta by using the furnace. Move to the furnace just next to the crafting table and add black terracotta block in the upper box and coal in the lower box to get black glazed terracotta block in the right-side box of the furnace. Add this block in your “ready to use” stock. You can use Glazed terracotta for decoration.