Meanwhile, heat coconut oil in large skillet over medium heat; add cumin and cardamom pods and fry until fragrant, about 2 minutes. Add garlic, ginger and red finger chilies and cook, stirring, for 2 minutes. Add onion and cook, stirring, until softened, about 5 minutes. Add tomatoes and cook 2 minutes; sprinkle in garam masala, coriander, chili powder, turmeric, mango powder (if using) and sea salt; stir to combine.