Turning Zombie Villagers Back
The process is straightforward once you know the mechanics. You need a splash potion of weakness and a golden apple. Feed the zombie villager the golden apple while it's under the weakness effect, then wait for the conversion to complete. Here is what actually happens when you do this. The zombie villager enters a shaking state, the particles swirl, and after anywhere from 2 to 5 minutes depending on game difficulty, it transforms back into a regular villager. Easy enough in theory. The problem is everything surrounding that basic sequence. First, the weakness potion. You have to throw a splash potion of weakness at the zombie villager. This is not a drinkable potion. You brew it using a brewing stand, glass bottles, a splash potion base, and a fermented spider eye. The fermented spider eye comes from combining an ordinary spider eye with sugar and an adjective. It sounds tedious the first time you hear it, but once your brewing setup is running, it takes about thirty seconds per batch.
The golden apple is the harder resource to come by. It requires eight gold ingots arranged in a square around one apple in the crafting grid. If you are mining for ore like most people, you will accumulate gold slowly. I have seen players spend forty-five minutes just mining gold for a single golden apple. An alternative is trading with existing farmers or libarians, but those villagers may not stock them, or they might charge an absurd price after you have cured a few zombies already. Once the zombie villager has the weakness effect active and you feed it the golden apple, it starts shaking. You need to keep it safe during those two to five minutes. If another zombie reaches it, the whole thing resets. If it takes damage from anything other than you directly, the cure still progresses but the timer gets weird. I had a situation once where a stray arrow from a wandering trader's llama hit my zombie villager and the conversion just stalled at about sixty percent. Waiting it out eventually worked, but I lost roughly ninety seconds that I did not want to lose. Another detail people miss: you can speed up the conversion with effects. Giving the zombie villager the regeneration effect cuts the cure time significantly. If you have a spare splash potion of regeneration, use it right after the weakness and before feeding the apple. I keep a stack of both weakness and regeneration splash potions specifically for this because the time savings add up when you are curing multiple zombies.
The bed requirement is another thing nobody emphasizes enough. The zombie villager needs a valid bed placed near it before you start the cure. If there is no bed, the villager you get at the end will be unemployed, which means you cannot reassign trades afterward without letting it sleep in that bed first. I learned this the hard way after curing three zombie villagers and then spending twenty minutes frantically trying to figure out why none of them had professions. Put down the beds first, then start the cure. Discounts are the reward for curing. Each zombie villager you cure gives a permanent trading discount to the resulting villager. The first cure typically drops prices by around twenty percent. Subsequent cures of the same profession stack, up to a maximum of five cured trades per villager. After that, the discounts stop accumulating. If you are building a trading hall, this is the main reason you bother curing instead of just finding naturally spawning villagers. The price reduction is substantial over time. There are scenarios where curing does not work at all. If the zombie villager has been named with a name tag in Bedrock Edition, the cure will fail every time. I spent a full evening trying to cure a named zombie thinking my potions were bad, only to discover the name tag was the issue. Remove the name tag, then try again. Also, on hardcore difficulty, zombie villagers cannot be cured if they are in the process of turning a regular villager when you intervene. The mechanics prioritize the infection event, so you end up with two zombies instead of one cured villager. This is rare but frustrating.
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Here is the practical sequence I use now. Brew splash weakness and splash regeneration. Craft two or three golden apples. Place beds for each zombie villager you plan to cure. Lock the zombie villager in a small enclosed space so nothing else can reach it. Toss the weakness potion. Feed the golden apple. Toss the regeneration potion if you have it. Wait. Come back when the particles stop. If you are doing this in multiplayer, assign one person to watch the curing zone. Zombies spawn randomly at night, and a single stray mob can ruin the whole process. I once left my curing area unattended for twelve minutes while someone went to grab food. When I came back, a zombie had pathed into the enclosure and attacked the shaking villager. The cure aborted. I restarted it immediately and kept the door closed after that. The whole thing is not complicated, but the edge cases matter. Weakness before the apple. Regen to speed it up. A bed before you start. Keep it enclosed. Do not name-tag the target. Those are the variables that separate a smooth cure from a frustrating mess that wastes your gold and your time.
