Empty the buttermilk packet into a food processor or blender. Add the buttermilk, mayonnaise, tomatillos, cilantro, garlic, zest and juice of one lime and the jalapeno. Mix until well blended.
Place the roast in a crock-pot and sprinkle generously with garlic salt. Pour in enough water just to cover the roast. Cook on high for 3½ hours.
Use an immersion blender or regular blender to mix coke, salsa and brown sugar together until smooth. Pour over the roast and continue to cook on high for another 1½ hours.
Pour the Lime Ranch Dressing over the pork and enjoy with rice and beans; or make Tacos, Burritos or a Sweet Pork Salad.
Place a 6 to 8 inch flour tortilla sprinkled with Mexican blend cheese on a cookie sheet. Broil about 6 inches away from the broiler element until the cheese melts.
Lime Ranch Dressing over all. Serve immediately.
Variations: You may serve this pork with Food Nanny Lime Rice and black or pinto beans on the side. The pork is also terrific in tacos, burritos. Always serve the Lime Ranch Dressing on the side.