Easy Lamb Shawarma

Name: Easy Lamb Shawarma
Ingredients: 2 cups plain yogurt; 1/4 cup distilled white vinegar; 1/4 cup olive oil; 3 tablespoons lemon juice; 3 cloves garlic, minced; 1/2 teaspoon ground cinnamon; 1/2 teaspoon ground nutmeg; 1/2 teaspoon dried oregano; 2 bay leaf; 3 1/2 pounds boneless leg of lamb, trimmed of fat, and cut into thin strips; 2 tablespoons olive oil; 8 (8 inch) pita bread rounds; 2 tomatoes, thinly sliced; 1 onion, thinly sliced; 1/2 bunch fresh mint leaves