If there was a family reunion of 31 people and they all liked mashed potatoes or potato salad how many serving's or potatoes would you need to make for mashed potatoes and or potato salad?

For a family reunion of 31 people, a general guideline is to plan for about ½ to 1 cup of mashed potatoes or potato salad per person. If you assume an average of ¾ cup per person, you would need approximately 23.25 cups, which is about 5.8 quarts or roughly 6 quarts of mashed potatoes or potato salad. Adjust the amount based on the group's preferences and whether you are serving other side dishes.