Cutting open a potato and discovering a black ring or dark patch inside can be surprising. From the outside, the potato may look completely normal, which makes the discoloration seem unexpected. Many people immediately assume the potato has spoiled or become unsafe to eat, but in most cases, the explanation is much simpler and less concerning.
One of the most common reasons for these dark rings is internal bruising. Potatoes may appear durable on the outside, but their inner tissue is sensitive to pressure and impact. During harvesting, packaging, transport, or storage, small bumps and pressure can damage the inside without leaving visible marks on the skin.
