Do-It-Yourself Homemade Mustard - cooking recipe

Ingredients

2/3 cup water
1/2 cup mustard seeds
3 tablespoons dry mustard powder
3/4 cup white wine vinegar
2 teaspoons kosher salt

Preparation

Blend water, mustard seeds, and mustard powder in a blender until seeds are coarsely ground; transfer to a non-reactive bowl, cover with plastic wrap, and let rest at room temperature until thickened, 4 hours to overnight.
Stir vinegar and salt into the mustard seed mixture.