What is the color of rotten potato?

The color of a rotten potato can vary depending on the type of rot and how far along it is. Here are some possibilities:

* Greenish-brown: This is a common color for potatoes that have sprouted, which is a sign of early rot.

* Brown: As the rot progresses, the potato will turn brown and mushy.

* Black: In some cases, black mold or bacteria can form on the potato, making it appear black.

* Gray: Soft rot bacteria can cause a gray, slimy appearance.

It's important to note that any potato with a significant change in color or texture should be discarded as it's likely rotten and unsafe to eat.