Ham Mustard Sauce

Directions

1. 1
   Mix mustard and vinegar in jar, let set overnight.
2. 2
   Next morning in top of double boiler, place egg, beat in sugar, dash salt and dry mustard and vinegar mixture.
3. 3
   Cook over boiling water, stirring constantly until thickened.
4. 4
   Cool.
5. 5
   Add mayonnaise and whipped cream.
6. 6
   Stir thoroughly.
7. 7
   Serve with baked ham.