Judith's Dressing

Source: A friend gave me this recipe.

I neglected to ask how much it made, but I'm guessing about a cup and a half. She said she puts it on a simple salad of lettuce, cashew pieces and shredded Swiss cheese.

1 cup mayonnaise
1/2 cup granulated sugar
1/4 cup vinegar
1 tablespoon celery seed
1 teaspoon dry mustard
1/4 cup very finely minced onion
1 teaspoon salt
Pepper to taste

Place all ingredients in blender and mix until well blended.