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Baking a russet potato is a simple, comforting way to enjoy a hearty meal. But what happens when you slice into your baked potato, expecting a fluffy golden interior, only to find dark grey streaks or spots running through the flesh? At first glance, it can be alarming — your immediate thought might be, “Is this safe to eat?”
Fortunately, in most cases, this grey discoloration is not harmful, but understanding what causes it, when to be cautious, and how to handle it can make all the difference in both safety and taste.
Why Do Potatoes Sometimes Develop Grey Streaks?
Potatoes are living plants even after they’ve been harvested, and they carry minerals, moisture, and natural enzymes. These components can interact with heat, air, or metal utensils to create unusual colors inside the potato. The most common causes of grey streaks include: