MAKE THE WHITE SAUCE
To a blender or food processor, add the mayo, sour cream or yogurt, garlic, sugar, lemon juice, and black pepper.
Blend together until completely smooth and set aside.
MAKE THE SPICY RICE
Soak rice in water in a bowl for 30 minutes and then drain.
Wash rice for 2 minutes with cold water or until the water runs clear.
To a pot over medium heat, add the butter, olive oil, garlic, and tomato paste. Cook down for 2 to 3 minutes.
Add the rice and toast it for about 2 to 3 minutes.
Add the chicken broth, chili powder, salt, cumin, coriander, garam masala, paprika, cayenne or red chili flakes, black pepper, oregano, onion powder, and turmeric. Mix together and bring to a boil.
Then lower the heat to simmer, cover, and cook for about 20 minutes. Turn off the heat but leave covered for 10 minutes to steam the rice.
Take off the lid and fluff with a fork.
MAKE THE LAMB SHAWARMA
To a large bowl, add the chopped lamb, olive oil, allspice, coriander, garlic, paprika, cumin, salt, sumac, black pepper, and turmeric. Mix to marinade evenly. For more flavor, you can let it marinade for 30 minutes or even overnight in the fridge.
Add a drizzle of olive oil to a cast iron skillet or pan over high heat. Add the lamb and cook for 8 to 10 minutes, stirring around a few times so the meat evenly browns.
Once cooked all the way through, take off the heat.
ASSEMBLE BOWLS
Add rice to the base of the bowl and top with lettuce, tomatoes, lamb, and a few pieces of pita.
Drizzle white sauce and hot sauce on top. Optional, add a drizzle of bbq sauce for some sweetness to enjoy!