Microwave Chicken Briyani

Ingredients
1/2 kilo chicken
1 medium onion finely chopped
1 medium-large tomato chopped, put in microwave for 1 minute
1 cup yogurt
1 heaped tbsp ginger garlic paste
1/4 tsp haldi/ turmeric powder
1/2 tsp red chilli powder
1 heaped tsp coriander/ daniya powder
Few pieces of assorted garam masala
Zeera
1 heaped tsp of garam masala powder
Tip of tsp of yellow colour powder
Few threads of saffron/zafran
2 cups of basmati rice soaked for half an hour
Half a cup of milk
Oil

For Layering the biryani
1 small tomato chopped
Mint leaves
Few pieces of green chilli
Handful of fried onion
Lemon Wedges
Few drops of kewra essence