Instant Pot Butter Chicken

Name: Instant Pot Butter Chicken
Ingredients: 2 tbsp. unsalted butter; 1 tbsp. vegetable oil; 1 large yellow onion, finely chopped; 5 cloves garlic, crushed and roughly chopped; 2 tsp. peeled grated ginger; 6 oz. tomato paste; 2 lb. skinless, boneless chicken thighs, cut into 1 pieces; Kosher salt; Freshly ground black pepper; 1 c. water; 1 tbsp. garam masala; 1 tbsp. granulated sugar; 1 tsp. ground cumin; 1 tsp. paprika; 1/2 tsp. ground turmeric; 3/4 c. heavy cream; Fresh cilantro leaves, rice, naan, and yogurt, for serving