Chicken Vindaloo

Name: Chicken Vindaloo
Ingredients: 1 tbsp. whole black peppercorns; 1 tbsp. black mustard seeds; 2 tsp. cumin seeds; 2 tsp. coriander seeds; 1 tsp. fenugreek seeds; 5 whole cloves; 1 (1″) stick cinnamon; 1⁄4 cup Hungarian paprika; 1⁄4 cup palm vinegar; 1 tsp. ground turmeric; 1 tsp. light brown sugar; 16 cloves garlic, minced; 1 (2″) piece ginger, peeled and minced; 2 lb. boneless, skinless chicken thighs, cut in half; 3 tbsp. canola oil; 2 large yellow onions, finely chopped; 10 thin green Indian chiles, stemmed, seeded, and minced; 1 lb. small new potatoes, cut in half (cut in quarters if large); Cooked white rice, for serving