Instructions

1. For the tomatillo sauce, place an oven rack a few inches from the broiler. Place tomatillos, jalapenos, onion wedges, and garlic on a roasting pan and broil for 5-6 minutes until starting to char. Flip all of the ingredients to the other side and broil for another 5-6 minutes, until tomatillos are soft and blackened.
2. Allow the vegetables to cool for about 20 minutes. Split the jalapenos in half lengthwise and remove the seeds. (If a hotter sauce is desired, reserve some of the seeds to add to the blender.) Transfer the roasted vegetables and their juices to a blender. Blend until the ingredients are pureed but still a little chunky. Add the cilantro, lime juice, and a generous pinch of salt and pulse a few more times. (The sauce can be made up to 3 days in advance.)
3. For the pork, heat a few tablespoons bacon grease (or oil) in a large Dutch oven or braising dish over medium-high heat until sizzling. 
4. Meanwhile, combine the flour, salt, and cumin in a large mixing bowl. Add the pork cubes and gently toss to coat. Working in batches, add the pork to the hot grease and cook until browned, about 1 - 2 minutes per side. Remove with a slotted spoon, set aside, and continue with the remaining pork.
5. Pour the beer into the hot skillet to de-glaze the pan and scrape up any leftover browned bits as the beer bubbles. Return the browned pork cubes to the skillet along with tomatillo sauce. Bring the mixture to a gentle boil; reduce heat and simmer for 15 - 20 minutes to allow flavors to marry. (This dish only gets better with time, so feel free to make a day or two in advance. When reheating, add a glug of chicken stock or water to thin if necessary.)
6. Serve with warmed tortillas, rice, beans, cilantro, and lime wedges.