The Steven Raichlen Fajita BBQ Rub is a zesty blend of New Mexican chilies, garlic, onion, cilantro and oregano. There are two ways to use a rub. You can sprinkle it on right before grilling, in which case it acts like a seasoned salt. Or, you can apply it several hours ahead or even the night before, in which case it not only flavors the meat, but cures it. This method gives you a much more complex flavor.