How to make Tandoori masala?

My good friend Surabhi asked this question. Surabhi, there are two ways to make Tandoori masala. Easier way: buy it from the market and use it :)
Difficult way--
Ingredients:
2 tbsp coriander seeds
2 tbsp cumin seeds
1/2 tsp fenugreek
1 3" cinnamon stick
1 tsp dry garlic powder
1 tsp dry ginger powder
10-12 cloves
1 tsp black pepper
2 black cardamom
1/2 tsp nutmeg (Jaifal)
1 tsp mace(Javitri)
5-6 dry red chillies
1 tsp red or orange food color
Salt (you can add it now or later when you are actually using the masala for marination)

Grind all the above ingredients to a fine powder, sieve it and store in an airtight container.