A brewing stand is a block used for brewing potions, splash potions, and lingering potions. It can be crafted in the village churches.
How to craft a Brewing stand in Minecraft
Head over to the crafting menu, you chose the crafting area with the 3×3 crafting grid. To craft a brewing stand, put 1 blaze rod and 3 cobblestones in the 3×3 grid. Make sure that the blaze rod and cobblestones are placed in the pattern as the image, unaltered. Put 1 blaze rod in the second box for the first row and place 3 cobblestones in the second row. This is how you craft a brewing stand.
How to get cobblestone in Minecraft
Cobblestone is the byproduct of the mine and is one of the most common blocks in Minecraft if you know how to find it. It can be picked up by mining ordinary stone or in dungeons and also available with mossy cobblestone. Other than dungeons it can also be found across strongholds and villages.
How to get Blaze Rods in Minecraft
Like cobblestones, a blaze rod is an item that cannot be crafted but can be gathered in the game. It is used as a fuel in a furnace to smelt/cook 12 items other than crafting and are obtained by killing Blazes in Nether Fortresses.
In short, crafting a brewing stand is easy if you know the steps. This detailed guide will suffice your need if you want to craft one for yourself.