How many people will be fed by 20 ounces of mashed potatoes?

It's impossible to say how many people 20 ounces of mashed potatoes will feed without more information! Here's why:

* Serving size: How much mashed potatoes do you consider a serving? Is it a 1/2 cup, 1 cup, or something else?

* Appetite: People have different appetites. Some might be happy with a small side of mashed potatoes, while others might want a larger portion.

* Other foods: Are the mashed potatoes the main dish or just a side? If it's part of a larger meal, people might eat less.

To figure this out, you need to:

1. Decide on a serving size.

2. Consider your guests' appetites.

Here's an example:

* If you decide on a 1/2 cup serving size, and there are 4 ounces in a 1/2 cup, then 20 ounces would feed 5 people (20 ounces / 4 ounces per serving = 5 servings).

Remember, this is just an estimate. It's always better to err on the side of making a little extra!