Here we combine traditional Indian spices like cumin, coriander, mustard and paprika with yogurt and lime for a tangy marinade. Marinate seafood in the refrigerator for 20 minutes to one hour, or chicken for as long as eight hours.
Toast cumin, coriander and mustard seeds in a small dry skillet over medium heat, stirring constantly, until fragrant, about 2 minutes. Transfer to a spice grinder or mortar and pestle and grind to a fine powder. Add paprika, cayenne pepper, salt and turmeric.
Combine yogurt, lime juice, onions, garlic and ginger in a blender or food processor. Blend until smooth. Add spices and pulse to combine.