Detailed Instructions: In this task, you will be presented with the directions of a recipe separated by "," and have to fill in the "___" which is a step that is missing from the recipe.
Q: Boil potatoes in jackets; let cool just enough to handle, Peel and dice potatoes while warm, Dice peppers, onion and celery with salt and pepper to taste,______, Cool in refrigerator, Next day, add sour cream and mayo,
A:
Add vinegar and oil; mix well