Mix powdered mustard seed with equal quantity of water...
Coleman's dry mustard is best. It's the only one I have found that's not bitter.
Linda C

FWIW, using the same powdered mustard you vary the flavor and the heat by what liquid you choose. Among those you can try: water; all the vinegars; beer; white wine. For a really different flavor, try coffee.

Then you can ring the changes all over with additional flavorings: honey, horseradish, wasabi, ginger, and so forth.

My recipe is a little different but close to the others. The oil keeps the mixture shiny and does not turn dark when exposed to the air for a while.

* Exported from MasterCook *

Hot Mustard *

Recipe By : Reuben Ware
Serving Size : 12 Preparation Time :0:10
Categories : Sauces

Amount Measure Ingredient -- Preparation Method
-------- ------------ --------------------------------
1 tablespoon powdered hot mustard
1 teaspoon white vinegar
1/2 teaspoon sesame oil
2 tablespoons water

Combine all ingredients in a small bowl, adding more or less water depending on desired thinness of the sauce. Let stand for 10 minutes, then serve as a dipping sauce for Egg rolls.

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Coleman's ground mustard does not turn dark when exposed to the air.
Linda C