The fastest way to cure a zombie villager is to use a splash potion of weakness and then feed them a golden apple.
Here's a step-by-step guide:
- Brew a splash potion of weakness: You'll need a brewing stand, a water bottle, a fermented spider eye, and a redstone dust.
- Find a golden apple: Golden apples are rare and can be found in chests or crafted using a block of gold and an apple.
- Target the zombie villager: Stand a safe distance away from the zombie villager and throw the splash potion of weakness at them.
- Feed the golden apple: Once the zombie villager is weak, approach them and feed them the golden apple. This will cure them, and they will regain their normal villager appearance.
Important Note: Make sure you are in a safe area when curing a zombie villager as other hostile mobs may be attracted to the noise.