It would be less than a gallon and it should serve about 20 people. A serving is considered to be 4 ounces. That's about one big serving spoon per person.
Approximately 4.5 quarts in 5 pounds of potato salad, including hard-cooked eggs.
how much does a gallon of concrete weigh
To start with, you should never be putting mustard or vinegar in potato salad!! Yuck!!
potato
it all depends on the size of the chicken salad
That is 87.5 pounds
I would make 25 pounds of it.
they weigh 200g after cook
There are 4 quarts or 16 cups in a gallon, so if you consider 1/2 cup a serving (pretty standard) , you have 32 servings.
The same as a potato?
Unless you have a recipe which substitutes the mayonnaise with something much healthier, then no...
On average, 1 gallon of Italian dressing weighs around 8.3 to 8.6 pounds, depending on the specific brand and recipe.