Indian Spiced Stew with Chicken and Potatoes

Name: Indian Spiced Stew with Chicken and Potatoes
Prep time: 20 min
Cook time: 2 h
Total time: 2 h 20 min
Cuisine: Indian
Ingredients: 3 Tbsp vegetable oil; 3 large skin-on/bone-in chicken breasts ((or can use boneless)); Kosher salt and freshly ground pepper; 1 small onion (finely chopped); 4 cloves garlic (chopped); 1 Tbsp finely grated ginger; 2 Tbsp tomato paste; 2 tsp garam masala; 2 tsp ground cumin; 2 tsp ground turmeric; 1 1/2 tsp ground coriander; 1/2 - 3/4 tsp cayennne pepper ((depending on how spicy like it or you can omit)); 3 cups low-sodium chicken broth ((plus a bit more thinning, if necessary)); 3/4 cup tomato purée; 1/2 cup heavy cream ((can use a lighter cream)); 1/2 pound small Yukon Gold potatoes,sliced 1/4" thick ((or small fingerlings, sliced in half lengthwise))