Grandma Lou’s Homemade Mustard Written by Lucille "Lou" Neal on December 17, 2019 in Burns, Lucille Grandma Lou’s Homemade Mustard Print Recipe Pin Recipe Servings: 2 pintsCourse: CondimentCuisine: American Ingredients Method Ingredients 1x2x3x? 4 oz can dry mustard1 c cider vinegar2 eggs1 c sugar¼ tsp salt & pepper1 ½ c mayonnaiseGet Recipe Ingredients Method Mix and let stand overnight: dry mustard and cider vinegar.Next day, beat in: eggs, sugar, and salt.Cook until thickened.Let cool, then add mayonnaise. Beat well.Store in refrigerator. Tried this recipe?Let us know how it was!