How to make curry powder at home?

After getting married when I was leaving for the US for the first time with all the other things that my mother-in-law gave to for my new house hold she also gave me a big packet of chat masala and garam masala or which is popular as curry powder. I did not realize how important that packet of curry powder was until it was finished and I had to go and get a store bought curry powder. Now whoever has used or eaten Indian food made with homemade curry powder knows how great is the difference. Well! after using that packed masala I made sure that I never had to use it in my kitchen again and always got a big pack of it from my mother-in-law whenever she would visit me or we would visit them.
It has been a while since the last batch of that curry powder in my pantry is finished and I had been running from putting any kind of curry powder in any of my cooking but after a while it really becomes difficult to cook Indian food without curry powder so this time I thought of preparing it at home. I was not sure how it would turn out but I did pretty well and it was super easy too.
You can just make a big batch of curry powder and store it in your pantry forever. It never turns bad and if the box is tightly closed it will never loose that beautiful aroma. I promise after trying this no-one can go back to that store bought curry powder.
The following would make about half a cup of curry powder.

Ingredients:
Whole bay leaves (8-10 no.)
Whole cloves 10 gms
Whole peppercorn 50 gms
Cinnamon sticks (3-4no.)
cumin seeds 150 gms
Black cardamoms 100gms

Just grind everything together in a coffee grinder. Don't add any water to it.
That's it! Try this one and you'll know the difference.