Combine ingredients in a nonreactive mixing bowl. Cover with plastic wrap and let sit at room temperature for 1�2 days so that the mustard seeds soften and the flavors meld.
2 Transfer the mixture to the bowl of a food processor and process, stopping occasionally to scrape down the sides of the bowl with a rubber spatula, until the seeds are coarsely ground and the mixture thickens, about 3 minutes. Transfer to a jar and cover.
3 Refrigerate overnight and use immediately or refrigerate for up to 6 months. (The flavor of the mustard will mellow as the condiment ages.) |