EEWW what's that green stuff all over those potatoes? The next time you walk into your supermarket, grocery store - you know, the place you buy food - take look at the potatoes. I mean a real good look. Most likely they'll have a ting of green on them. This green stuff is a bitter tasting chemical called Solanine.
Solanine is produced when potatoes are subjected to light even under flourescent lighting found in your favorite food shopping establishment. Potatoes grow under the ground. As the plant matures we pile up soil around the plant to "hill" them. This protects the tubers and enables them to develop and not poke out of the ground. Heavy irrigation and rains can wash your "hill" to uncover
potatoes near the surface so cover them back up if this occurs.We don’t want to expose those spuds to the light. If consumed in large quantities Solanine is toxic. That's why it’s important to cut away any green portions of a potato before you cook and consume. Remember to store your potatoes out of exposed light to cut down on the Solanine.