Craft a Brewing Stand with 1 Blaze Rod and 3 Cobblestone or Blackstone
Get Blaze Powder to fuel the Brewing Stand
Get Water Bottles by filling Glass Bottles with water
Get Nether Wart from a Nether Fortress or Bastion Remnant
Put Blaze Powder in the Brewing Stand fuel slot
Put Water Bottles in the bottom slots
Add Nether Wart to make Awkward Potions
Add Blaze Powder to the Awkward Potions to make Potions of Strength
Add Redstone Dust to extend the duration
Add Glowstone Dust to increase the strength level
Add Gunpowder to make Splash Potions of Strength
Add Dragon’s Breath to make Lingering Potions of Strength
Drink the potion to gain the Strength effect