Indian Spice Marinade

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.