In a heavy bottom pan add a tbsp of oil and add both the type of chillies and roast it for 2 to 3 mins.
Remove and spread on a flat plate. Add all other ingredients in another dry pan except turmeric powder and roast for about 5 mins till the aromatic smell is produced.
Remove and let it cool. Grind little by little in a small dry grinder. Mix all the portions of the powder thoroughly and store it in an air tight jar.