Arrange the onions, shallots, and garlic, in the bottom of a large, oven-safe Dutch oven.,
STEP 3
In a bowl, mix the paprika, cumin, oregano, thyme, cayenne, and season with 2 teaspoons of salt. Place the roast on the onions, then rub all over with the spice mix. Pour over the beer and lemon juice. Add 1/3 cup water. Cover and roast for 3 to 4 hours or until very tender.,
STEP 4
Crank the heat on the oven up to 425° F. Uncover and cook for 10 minutes, until deeply caramelized on top. Remove the meat from the pot and shred it using two forks.,
STEP 5
Simmer the remaining sauce left in the pot with the butter, until just barely reduced. Toss the beef with the sauce.,
STEP 6
Stuff the beef and onions into warmed pitas with tzatziki. Then add lettuce, red onions, and herbs. Drizzle over more tzatziki. YUM! Enjoy!