Chicken Shawarma: A Middle Eastern Sandwich

Ingredients

• 650 g chicken breast (deboned and skinless and sliced thinly )
• 1 cup yogurt (plain)
• ¼ cup vinegar
• 2 cloves garlic (crushed)
• 1 tsp pepper
• ½ tsp salt
• 3 cardamom pods
• 1 tsp allspice
• 2 tbsp fresh lemon juice
• 1 cup tahini
• ¼ cup lemon juice
• 2 tbsp yogurt
• 1 onion (thinly sliced)
• 2 tomatoes, thinly sliced
• 1 cucumber, thinly sliced
• ½ cup mixed seeds and finely chopped dried fruits(optional)
• ½ cup fresh parsley- chopped
• 6 small, pickled Gherkins, thinly sliced
• 5 ready-made pitas