2. Grind and Toast Spices
Grind the coriander seeds, cumin seeds, and mustard seeds in a mortar and pestle or spice grinder until they form a fine powder.
Heat the coconut oil in a Dutch oven over medium heat. When the oil is hot, add the ground spice mixture, along with the curry powder, turmeric, and chili powder. Cook, stirring constantly, until aromatic, about 3 minutes.