roasting or baking potatoes keeps the i lower on the other hand a cup of boiled potatoes has a similar effects on blood sugar as a similar effect on blood sugar as a can of coca-cola asid from losing 75 percent of vitamin c during frying french fries and potato chips expose the consumer to acrylamide a potentially toxic and cancer causing substance eating too many potatoes on a regular basis may acuse hyperacidity avoid peelingthe potatoes before cooking them the protein, minerals, and vitamin c are concentrated in the skin to reduce vitamin c loss in boiled potatoes it is important to boil the water first before adding the potatoes potatoe increases its sugar content when stored in the refrigerator it should be stored in a cool dry place ways to prepare always eaten cookes boiled, baked , roasted grilled fried added to salads made into chips mashed ground into flour made into soup used as meet extender added to omelet flaked used as dilling