Hot Mustard for Pork & Seeds (Donna)

1 4oz. can dry mustard (Coleman)
1 cup cider vinegar
Mix mustard and vinegar together and let stand over night.
Next day beat with a mixer:
2 eggs
1 cup sugar and mustard mix
Cook in double boiler until thick, Cool
Add:
1 1/2 cup mayonnaise
Beat well.
Refrigerate