1 c Boiling water
1 c Dry mustard
4 tb Soy sauce
1/4 c Vegetable oil
Combine boiling water, soy sauce, and dry mustard. Whisk together until a smooth paste is formed. Mix well. Slowly add oil to create a smooth paste.
Note: A little sesame oil, or other flavored oils, may be admixed in whole or part with the vegetable oil to vary the flavor and to tailor it for various applications.