Gather materials: 1 Nether Wart, 1 Gold Carrot, 1 Awkward Potion (or make one)
Make an Awkward Potion:
Brew Water Bottle + Nether Wart in a Brewing Stand
Make the Night Vision Potion:
Brew Awkward Potion + Gold Carrot in a Brewing Stand
Optional strength upgrade:
Brew the Night Vision Potion with Glowstone Dust for a stronger Night Vision effect
Optional duration upgrade:
Brew the Night Vision Potion with Redstone for longer Night Vision
Optional splash version:
Brew Night Vision Potion with Gunpowder to make a Splash Potion of Night Vision
Optional lingering version:
Brew Night Vision Potion with Dragon’s Breath to make a Lingering Potion of Night Vision