Add garlic, red pepper flakes, oregano and olive oil to a chopper or blender. Chop and blend.
Cut pork into 2 inch pieces.
Over medium heat add vegetable shortening to a deep pot. Add pork and cook for about 10 minutes.
Then add chicken broth, red wine vinegar, bay leaves and salt.
Add the garlic, red pepper flakes, oregano and olive oil mixture from chopper. Cook for 1 ½ hours or until meat is super tender.
Once pork is done, remove bay leaves.
Chop cilantro, red onion, crumble queso fresco and slice avocados. Sprinkle some lemon juice over avocado slices so they do not discolorate.
Warm tortillas a couple at a time in microwave for a few seconds.
Assemble tortillas with some of the pork.
Top with onions, avocado slices, cheese and cilantro. You can also sprinkle some lemon juice over carnitas and top with hot sauce if you like. Enjoy!