Nether Brick item in Minecraft
A Nether Brick is netherrack baked in a furnace, the building piece of Nether bricks.
It is obtained in the Furnace from Netherrack.
What it does
Four of them make a block of Nether Bricks, the dark stone of Nether fortresses. Two nether bricks with two Nether Wart make Red Nether Bricks, and nether bricks also go into the Nether Brick Fence recipe.
Since Netherrack is everywhere in the Nether and smelts fast, Nether bricks are a cheap, fire-proof material for builds on both sides of the portal.
How to craft
Furnace 
Netherrack → Nether Brick
// Slots with several items cycle through every accepted option.
How Nether Brick connects
3 links · from the 26.3 game data
Same family
Used to craft (3)
Nether Brick Fence
Nether Bricks
Red Nether Bricks Nether Brick · FAQ
How do you get Nether Brick in Minecraft?
In a Furnace: 1 × Netherrack gives 1 × Nether Brick. Bartering: Piglin.
What is Nether Brick used for in Minecraft?
It is a baked netherrack piece for Nether brick blocks and fences. It is an ingredient in 3 recipes, made at the Crafting Table; for example Nether Brick Fence, Nether Bricks and Red Nether Bricks.