Dressing for macaroni or potato salad

Why I Love This Recipe
My mom used this recipe when I was growing up. I think she got it from a friend. It is at least 50 years old.
Ingredients You'll Need
1 cup sugar
1/2 cup water
1/2 cup vinegar
2 eggs
1 Tablespoon cornstarch
1 cup of mayonaise
Directions
Combine all ingredients except mayonaise in a sauce pan. Heat and stir over medium heat until mixture comes to a boil. The sauce will thicken. Remove form heat and allow to cool. Then stir in 1 cup of mayonaise.