First cut up Pork into bite size pieces, place pork into a zip lock bag with McCormicks Al Pastor taco seasoning mix and let set in refridgerator for 30 min.
While Pork is setting, Dice onion and Cilantro into small pieces. Drain pineapple and set juice to the side.
Cook Pork in a skillet with intructions from the McCormicks seasoning packet. When pork is done drain off juices and place back into pan. Then pour in pineapple juice and simmer for about 5 min. Then drain juice off. Return pork to pan and over low heat stir in pineapple. Do not cook just warm.
Serve on soft taco shells with diced onion and cilantro on top. Roll up and Enjoy!!