A poisonous potato can't be baked or planted like a normal potato, nor do they have a use with the composter. When eaten, it can cause rapid damage to a player (similar to a spider eye, though not as dangerous). A poisonous potato has a 60% chance of poisoning a player for 5 seconds.
Is there a use for poisonous potatoes in Minecraft?
The only use for the poisonous potato is to eat one to gain the A Balanced Diet advancement, and even then you only need a single one.
What happens if you eat a poisonous potato?
Both solanine and chaconine cause toxicity through cell disruption leading to gastrointestinal symptoms such as vomiting, abdominal pain, and diarrhea. Some people may also experience headache, flushing, confusion, and fever. There have been a few cases of death from eating toxic potatoes.
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