The first step is understanding what you’re seeing. A dark ring or patch inside an otherwise normal-looking potato is often the result of internal bruising. This happens when potatoes experience pressure during harvesting, transport, or storage. Even when the skin looks flawless, the interior can discolor as cells react to stress. In some cases, natural internal patterns or exposure to air after cutting can deepen the color, creating gray or black areas that are firm and smooth rather than wet or fuzzy.Finally, cook with confidence. When handled and stored properly, potatoes remain a versatile and reliable staple.