Kabocha squash is a common ingredient in Japanese cooking. You may have had it dipped in tempura batter and fried in restaurants or slow-cooked in hot pots or soups. While this winter squash resembles a short, stocky cousin of the pumpkin, it has a sweet potato-like flavor and texture. The rugged, deep-green skin gives way to soft, reddish-yellow flesh on the interior. In addition to its delectable flavor, kabocha squash has many health benefits.