Goan Style Mushroom Soya Biryani

Name: Goan Style Mushroom Soya Biryani
Ingredients: 10-12 button mushrooms, halved; 1 cup soya chunks, soaked and drained; 2 cups rice, soaked and drained; 1 bay leaf; 4 black cardamoms; Salt to taste; 2 tablespoons ghee; 1 inch cinnamon; 3-4 green cardamoms; 6-8 cloves; 1 mace; 1 medium onion, finely chopped; 1 teaspoon red chilli powder; ¼ teaspoon turmeric powder; 1 teaspoon coriander powder; 1 teaspoon cumin powder; ½ cup tomato puree; ½ cup coconut cream; 1 cup yogurt; 1 cup fried onions; 2 tablespoons roughly chopped fresh mint leaves; 2 tablespoons roughly chopped fresh coriander leaves 4 green chillies, slit; 1 tablespoon lemon juice; A few strands of saffron, soaked in milk; Dough for sealing