Boiled in its skin

Boiled in its skin, a large potato, weighing about 300 grams, has 261 calories, 5.6 grams of protein and .3 grams of fat. If you peel the potato before boiling it, you lose about a half gram of protein, but the calorie and fat contents remain similar. Peeled or unpeeled, the potato has 5.4 grams of fiber, about the same amount as a bowl of bran flakes cereal, and 2.6 grams of natural sugar.