Instapot Kerala Coconut Chicken Curry

Ingredients

• 4 pepper(s) Red chili pepper (also chile or chilli)
• 6 large shallot(s) Shallots
• 3/4 cup Coconut, shredded, unsweetened
• 4 clove Cloves
• 1 stick(s) Cinnamon
• 3 pods Cardamom pods
• 2 tsp Peppercorn
• 2 tsp Coriander seed (cilantro)
• 2 tsp Fennel seed
• 1 tsp Mustard seeds
• 1 tsp Cumin seeds
• 1 tsp Turmeric, powder
• 1 tbsp Vegetable oil
• 1 piece, 1-inch Ginger root
• 2 clove(s) Garlic
• 2 large Yellow onion
• 2 large Tomato
• 2 1/2 lb Chicken thighs, boneless, skinless
• 3 tsp Salt
• 1 tbsp Vinegar, white