White Irish potatoes are among the most widely-grown worldwide. The tubers hold their shape when boiled or turned into potato salad, and can be roasted, broiled or fried.
The edible part of the plant is an underground stem called a tuber (not a root). Irish potatoes contain 2 percent protein and 18 percent starch. They are an inexpensive source of carbohydrates and, when prepared properly, provide good amounts of vitamins and minerals.