Goan Pork Vindaloo

Name: Goan Pork Vindaloo
Cuisine: Asian, Indian
Ingredients: 600gms leg of pork cut into bite size cubes; 4 tbsp vegetable oil; 1 tbsp black peppercorns; 2” piece of cinnamon stick; 1 slit green chilli; 1 tsp jaggery or brown sugar; 1 tsp tamarind paste; Salt to taste; 10-12 Kashmiri red chillies (or 5 dried red chillies deseeded if you prefer); 8 cloves of garlic; 1” piece of ginger; 1 tsp cumin seeds; 5 tbsp malt vinegar