Are green potatos on outside or inside?

The green color in potatoes comes from inside the potato. It's not the skin that's green, but the flesh.

Here's why:

* Chlorophyll: Green potatoes are green due to the presence of chlorophyll, a pigment that plants use for photosynthesis.

* Sunlight: When potatoes are exposed to sunlight, they produce chlorophyll, just like any plant.

* Toxicity: Green potatoes are not safe to eat because chlorophyll is a sign that the potato has started to produce a toxic substance called solanine.

So, even if the skin looks fine, if the flesh inside is green, it's best to discard the potato.