1Combine tequila, lime juice, orange juice, chopped fresh pineapple, sliced onion, minced garlic, chopped cilantro, sliced jalapeño, oil, blue agave, worcestershire sauce, and margarita salt in a glass dish to marinate the meat.
2Place the dish in the refrigerator to marinate.
3Remove the meat from the marinade and place on a hot grill.
4Simmer the leftover marinade liquid with butter on the grill to create a baste.
5Cover the grill with a lid to cook for a short period.
6Season the meat while on the grill.
7Flip the meat and continue grilling until done.
8Baste the grilling meat with the butter-marinade mixture.