Malabar Chicken Curry With Homemade Garam Masala

Name: Malabar Chicken Curry With Homemade Garam Masala
Ingredients: 3 tablespoons canola oil; 2 large yellow onions, halved and sliced thin; 2 tablespoons garam masala; 2 teaspoons kosher salt; 2 tablespoons fresh ginger, grated; 2 tablespoons garlic, minced; 3 large tomatoes, diced; 2 tablespoons chili powder; 1 teaspoon chili flakes; 6 chicken breasts, boneless, skinless cut into bite sized pieces; Cilantro leaves, for garnish; 3 tablespoons coriander seeds*; 2 tablespoons cumin seeds*; 4 teaspoons black peppercorns; 3 star anise, whole*; 2 teaspoons cloves, whole; 2 cinnamon sticks; 1 small nutmeg, whole*; 1 puya chile, whole, dried*; 2 teaspoons ground cardamom, or 2 tablespoons whole green pods