Potato is underground tubers that grow on the roots of a plant called Solanum tuberosum.

This plant is from the nightshade family and is related to tomatoes and tobacco.

Common potato-based foods and food products include french fries, chips, and flour.

Cooked potatoes with skin are a good source of many vitamins and minerals, such as potassium and vitamin C.

Potatoes usually come in shades of brown, but various colored varieties also exist, including yellow, red, and purple.

In addition, potatoes are mainly composed of carbs. Primarily in the form of starch, the carbs range from 66-90% of dry weight.

Simple sugars, such as sucrose, glucose and fructose, are also present in small amounts. Potatoes usually rank high on the glycemic index, making them unsuitable for diabetics.

The glycemic index is a measure of how foods affect the rise in blood sugar after a meal. 

However, some potatoes may be in the medium range, depending on variety and cooking methods.