Spanish Pork Burgers

Make Ahead Tip: Cover and refrigerate the lemon-saffron mayonnaise (Step 4) for up to 5 days.

Shopping Tip: Spain is known for its superb paprika called Pimentón de la Vera, which has a smoky flavor, and for intensely flavored peppers called Piquillos. Look for these specialty ingredients in well-stocked supermarkets, gourmet-food shops or online at spanishtable.com or tienda.com.

Ingredient Note: Literally the dried stigma from Crocus sativus, saffron is the world's most expensive spice. Each crocus produces only 3 stigma, requiring over 75,000 flowers for each pound of saffron. Fortunately, a little goes a long way. It's used sparingly to add golden yellow color and flavor to a wide variety of Middle Eastern, African and European-inspired foods. Find it in the specialty-herb section of large supermarkets, gourmet-food shops and tienda.com. Wrapped in foil and placed in a container with a tight-fitting lid, it will keep in a cool, dry place for several years.

Tip: To oil the grill rack, oil a folded paper towel, hold it with tongs and rub it over the rack. (Do not use cooking spray on a hot grill.) When grilling delicate foods like tofu and fish, it is helpful to spray the food with cooking spray.