Thanks a bunch Janet :)

That is the same recipe I use....from Perry County PA!!!

This is the recipe closest to my Grmothers...who was PD.From TOH

1 cup white sugar
1/2 tsp salt
2 eggs
1 Tbl mustard
2-4 tbsp. flour
1/2 cup vinegar
lump of butter
2 cups boiling water

Put vinegar and water in double boiler and bring to a boil. Beat eggs and sift the dry ingredients into them. Blend thoroughly and add slowly to water and vinegar. Stir until thick and cook slowly for 10 minutes.

I use less sugar, starting with 1/2C, then adding a bit more if needed.
Chop cooked potatoes,onion,hadr boiled eggs & celery & celery seed.Add dressing to taste, along with black pepper. You can add 1/2C LF sour cream if wanted.

Janetmt, I made your dressing this am and had it for dinner. We love it. Thank You for sharing.