Old Fashioned Boiled Salad Dressing - cooking recipe

Ingredients

1/2 cup sugar
1 tablespoon cornstarch
1/2 teaspoon salt
1 egg
1/4 cup vinegar (either white or cider )
1/2 cup hot water
2 tablespoons prepared yellow mustard (Dijon, Honey Mustard or other flavors will work)
1 tablespoon butter

Preparation

In microwave safe bowl mix sugar, cornstarch and salt.
Whisk in the egg, vinegar, water and mustard.
Microwave on high for 3 minutes then stir.
Microwave again on high for 1 minute then stir and repeat in 1 minute increments until dressing comes to a boil and thickens - about 5 - 6 minutes total cook time. (It will continue to thicken as it cools).
Add butter.
Store in refrigerator.