My daughter loves sweet potatoes and this is the way she eats them. Although she insists on using a sprinkle of brown sugar, I refuse to argue with a kid who loves a food so full of vitamins A, C plus niacin and potassium.
Yams are not the same thing as sweet potatoes. Yams are are tropical tubers and are higher in starch and have white flesh.
Small to medium sized potatoes are the sweetest and creamiest. The more colorful the potato, the more it contains the antioxidant beta-carotene. You can store sweet potatoes in a cool, dry pantry for up to two weeks; any longer and their sugar content will cause spoilage.