Can you eat potatoes after they turn brown?

1. Green Potatoes: If the potato has turned green, do not eat it. The green color indicates the presence of solanine, a toxic compound that can cause nausea, vomiting, diarrhea, and even more serious health problems.

2. Brown Spots on the Surface: If the potato has brown spots on the surface, it's likely just bruised and still safe to eat. You can usually cut away the brown spots and use the rest of the potato.

3. Browned Inside (After Cooking): If the potato has turned brown *after cooking*, this is usually just oxidation and the potato is still edible. It might have a slightly different texture and flavor, but it's not harmful.

4. Browned Inside (Before Cooking): If the potato is brown on the inside *before cooking*, it's likely starting to rot. This is a sign that the potato is no longer fresh and it's best to discard it.

In summary, it's important to examine the potato carefully before eating it. If you see any green discoloration, discard the potato. If it's just brown spots on the surface, you can usually cut them away. If it's brown on the inside after cooking, it's likely still safe to eat. If it's brown on the inside before cooking, it's best to discard it.