Created by Engrossed on November 12, 2011
Step 1: In a small stainless steel bowl, mix the mustard and the vinegar until smooth. Allow to sit for 3 hours.
Step 2: Combine the mustard mixture with the sugar and eggs in the top of a double boiler (You can use a metal bowl over a pot with about an 1-2 inches of water in it).
Step 3: Bring to a gentle simmer and cook for 20-25 minutes, stirring regularly until thickened (the consistency of mayonnaise).
Step 4: Store in refrigerator. Will keep for a week.