God designed potatoes to have a certain amount of nutrition. When they are full of nutrition, they look perfectly smooth like in the photo. There are no indentations where the eyes are. Sunken eyes are a symptom of nutrient deficiencies. Potatoes like alot of organic matter, especially decomposed leaves and sawdust. We built the ground up by putting down 1 foot of leaves and 4-6 inches of horse barn sawdust bedding. After 2 years of rotting, I slipped these potatoes under this organic matter and mulched the surface with leaves to keep the weeds down and conserve moisture. These potatoes are from one plant that I dug out with my bare hands. If potatoes are planted in the environment which God designed them to grow in, they will taste delicious if the variety still has the ability to take up the nutrients in the soil. Some varieties cannot take up the nutrients, even if present in the soil. These varieties have been bred to grow on chemical fertilizers. They do poorly on rich organic soil without the chemical fertilizers added.