"Thit Heo Nuong" Vietnamese Barbecue Pork
The marinade : fish sauce, soy sauce, palm sugar, 7-up, pear puree, scallions, garlic, onions, lemongrass, thai chilies.
The trick is in the pear puree which contains an enzyme that tenderizes the lean pork. I borrowed this technique from the traditional Korean barbecue marinades.