Pumpkin seeds, called pepitas, are popular in Mexican cooking. With their white hulls removed, pepitas are a medium-green color. They are delicious roasted and salted, as in this recipe. Try sprinkling them on salads for a new nutty crunch. Pepitas are sold unhulled, hulled, raw, or roasted and salted. Look for them in supermarkets near the nuts as well as in health-food stores and Mexican markets.