Vindaloo Masala
By Petrina Verma Sarkar, indianfood.about.com

This spicy Goan (Goa is on the western Indian coast) masala paste is typically used as the base in a pork curry but tastes just as good with chicken. One popular curry is Pork Vindaloo.

2 large onions chopped
3 large tomatoes chopped
1 tbsp garlic paste
1 tbsp ginger paste
1 tsp garam masala
3 dry red chillies
2 tsps coriander powder
1 tsp cumin powder
6-8 black peppercorns
White vinegar - to grind to a thick smooth paste

Put all the ingredients except vinegar into a food processor. Add the vinegar a little at a time, to grind the ingredients into a thick smooth paste