Underground tubers of the plants are known as “potatoes”. Since these tubers are rich in starch, they are an important source of nutrition. In addition to starch, potatoes also contain a certain amount of protein. Starch concentration is 20% and that of protein is 2%. Nutritional value is 90 calories. Although the above ground parts of the plant contain poisonous alkaloids, tubers are not poisonous. Sprouted potatoes also contain alkaloids and can cause poisioning. Starch clusters in potato tubers are in the shape of eggs or pears and consist of 70-100 micron particles. Potatoes are classified as yellow and red according to peel color and white and yellow according to flesh color. Potato seeds are called “milva”. It is cultivated mostly in the province of Nigde.