The only edible part of a frog is its hind legs. The delicate meat is tender and lightly sweet and can be most closely compared to the white meat of a very young chicken. Fresh frog's legs can be found from spring through summer in the fish section of many gourmet markets. They're usually sold in connected pairs ranging from 2 to 8 ounces. Look for those that are plump and slightly pink. Store, loosely wrapped, in the refrigerator for up to 2 days. Frozen frog's legs can usually be purchased year-round, though the flavor doesn't compare to fresh. Thaw in the refrigerator overnight before cooking. Because their flavor is so subtle, frog's legs should be cooked simply and briefly. A quick dusting of seasoned flour before sautéing in butter or olive oil will gild the lily perfectly. Overcooking frog's legs will cause them to toughen.