A Brewing Stand is a block in the game Minecraft used for creating potions. Players can place water bottles and various ingredients into the stand to brew different effects. It requires blaze powder as fuel to operate, which can be obtained from Blaze mobs found in the Nether. To use a Brewing Stand, players need to add up to three ingredients, such as Nether Wart or Ghast Tear, to the brewing process. The resulting potions can provide various benefits, like healing or speed boosts, and can be further enhanced or modified with additional ingredients.