Preparation

Step 1

Refrigerate potatoes and cool for ~45-minutes.

Step 2

Make the dressing: into a 1 cup measuring cup add the sugar, salt, onion salt, and vinegar then stir well. Add enough vegetable oil to make 1 full cup, and stir well.

Step 3

Slice the potatoes into ¼ inch sections.

Step 4

Add one layer of potatoes to a casserole dish and sprinkle them with salt and pepper, celery, parsley, and onions. Continue adding 3 or 4 more layers like this.

Step 5

Stir the dressing and pour it over the potatoes. Stir very gently, taste, and add more salt and/or vinegar, if desired.

Step 6

Cover but do not refrigerate overnight.