For the Slow Cooker Method: saute the onion, garlic, and ginger in a pan on the stovetop first, and once finished, add the sauteed aromatics to the slow cooker along with the tomato paste, tomato sauce, spices, and chicken, and cook on low for 8 hours or high for 4 hours. Once the time is up, stir in the yogurt and lime juice, garnish, and serve!