Prep all ingredients per the instructions above.
Lightly salt the brisket; set aside. Add all of the braising liquid ingredients to a slow cooker. Place the brisket into the slow cooker adding more water if needed so that it's ¾ of the way covered. Cover and cook, 6 to 8 hours on low or 4 to 6 hours on high until fork tender.
Remove the brisket and shred. Place the liquid into a blender and blend until smooth. Remove and discard the bay leaf and whole clove before blending. Then mix the shredded brisket into the liquid.
Make the slaw: Combine all ingredients for the slaw. Let marinate.
Assemble tacos: Warm the taco shells optional. Fill each taco shell with brisket and cheese.
Put a little sauce from the birria brisket in a bowl to dip if desired.
Combine the sparkling water and lemon. Serve over ice if desired.
Serve birria tacos with cabbage slaw, chips and salsa, and lemon sparkling water.