Preparation Stir peppercorns, mustard seeds, and cumin seeds in a small skillet over medium heat until toasted, about 2 minutes. Let cool. Put into a spice grinder with next 6 ingredients and pulse until finely ground. DO AHEAD: Store in an airtight container for up to 3 months.
Preparation Stir peppercorns, mustard seeds, and cumin seeds in a small skillet over medium heat until toasted, about 2 minutes. Let cool. Put into a spice grinder with next 6 ingredients and pulse until finely ground. DO AHEAD: Store in an airtight container for up to 3 months.