Here's a Paleo-friendly shawarma recipe I tried out on some guests last night. It was a big hit.
Based on this recipe:
http://www.whats4eats.com/sandwiches/shawarma-recipe
but adapted for larger quantity and no dairy.
5 pounds ground beef. I got extra-fatty beef, but I'm not sure if that makes a difference in the grill
4-5 large cloves of garlic
4 teaspoons salt
2 teaspoons black peppercorns
2 teaspoons allspice berries
1 teaspoon cardamom seeds
1 teaspoon ground cloves
3/4 cup fresh lemon juice
Grind whole spices in the blender. My blender fits any Mason jar - a pint-size jar works well for spices. I ground the salt with the other spices because I have coarse sea salt.
Add all ingredients to the beef and mix well. I used my hands, sort of like kneading bread.
Marinate 1 hour or overnight. Next time I'll try overnight, but this time I'm not sure I even made it to an hour.
Form patties. I stacked them on paper towels to keep them dry.
Cook well on a hot grill. My grill actually ran out of propane while they were cooking, but not too soon. It was a great way to go out.