Toast the whole spices in a dry sauté pan until they are warm and fragrant

Grind the whole spices in a coffee grinder

Dice onions and sauté in a stock pot until translucent

Add all of the spices, including the cayenne and turmeric, the tomatoes, and the vinegar to the onions, bring to a boil, then let simmer for 20 minutes

Allow the sauce to cool, then process until smooth