Ingredients

• 1/2 cup malt vinegar
• 1/4 cup plain yogurt
• 1 tablespoon vegetable oil
• salt and pepper to taste
• 1 teaspoon mixed spice
• 1/4 teaspoon freshly ground cardamom
• 8 skinless, boneless chicken thighs
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• 1/2 cup tahini
• 1/4 cup plain yogurt
• 1/2 teaspoon minced garlic
• 2 tablespoons lemon juice
• 1 tablespoon olive oil
• 1 tablespoon chopped fresh parsley
• salt and pepper to taste
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• 4 medium tomatoes, thinly sliced
• 1/2 cup sliced onion
• 4 cups shredded lettuce
• 8 pita bread rounds