What are in potatoes?

Actually potatoes are a complete meal. They have all of the carbohydrates, proteins and even vitamins and minerals. People can and many have lived only on them. And they are a cheap food to grow and store.
A good deal of starch, fiber, natural sugars and vitamins.
Starch, mostly.
It is a plant and the potato grows in the ground. it is not only a plant but a bulb plant.
Actually potatoes are a complete meal. They have all of the carbohydrates, proteins and even vitamins and minerals. People can and many have lived only on them. And they are a cheap food to grow and store.