Here's an excerpt taken from Dr. A's book:
Quote:
Take a potato, for instance. An incredibly versatile vegetable. You can do hundreds of things with it, from soup to vodka. And what you do with it detemines how fattening it is.
The worst thing to do, from the glycemic index perspective? Baked. The process of baking it renders the starches most easily accessible to your digestive system.
Slightly better? Believe it or not, that baked potato will be less fattening topped with a dollop of low-fat cheese or sour cream. The calorie count will be slightly higher, but the fat contained in the cheese or sour cream will slow down the digestive process, therby lessening the amount of insulin that potato prompts your body to make.
(Still, don't think that when you're at the mall and stop for a quick baked potato at one of those franchise places that you're having a healthy snack. A baked potato in midafternoon practically guarantees that you'll be starving for carbs by dinner. You'd be better off having a small ice cream or even a dark chocolate bar instead of that baked potato.)
Better that baked? Mashed or boiled, due to the differences in the cooking process, but also because you'd probably eat them with a little butter or sour cream, and the fat slows the digestive process. Even french fries are better than baked, because of the fat in which they're cooked. Of course, the same is true of potato chips, but don't be misled: None of these are good choices for someone on the South Beach diet.
The type of potato you eat is also a big factor in all this. Red-skinned potatoes are highest in carbs. White-skinned are better. New potatoes, better yet - in every vegetable or fruit, the younger when picked, the lower the carb count. If you must indulge, do so sparingly. And try sweet potatoes instead or white.