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