Load slow cooker. Turn slow cooker to low. Generously season pork shoulder on all sides with salt and pepper. Place the pineapples in the bottom of the slow cooker in one layer then add the jalapeños and garlic. Add the pork shoulder on top then pour the beer then the cola around the sides to just below the surface of the pork, but not covering it. Cover and cook for 8 hours. Don’t check it, just trust it!!
Shred and serve. Remove the bone from the slow cooker and discard. Using two forks, rake the pork in opposite directions to shred it allowing the pineapples, garlic and jalapenos to be shredded as well. Build tacos by using two warmed tortillas for a base, then adding a scoop of the shredded pork along the length of the center. Top pork with some onions, a few radish slices, a sprinkle of cilantro, a tiny drizzle of salsa verde and a lime wedge on the side to spritz,