How many lbs of red potatoes roasted to feed 120 people?

It's impossible to say exactly how many pounds of red potatoes you'll need to roast for 120 people without more information. Here's why:

* Serving size: Are you serving these as a side dish, a main dish, or part of a buffet? A small side portion could be 1/2 cup, while a main dish could be 1 cup or more.

* Appetite: How hungry are your guests? A group of active teenagers will likely eat more than a group of senior citizens.

* Other food: What else is on the menu? If there are other substantial sides, you'll need less potatoes.

Here's how to estimate:

1. Decide on a serving size: Let's say 1/2 cup per person as a side dish.

2. Convert to pounds: A medium red potato is about 1/2 cup cooked.

3. Calculate total potatoes: 120 people x 1/2 cup/person = 60 cups, or about 60 medium potatoes.

4. Estimate weight: A medium red potato weighs roughly 4 ounces. 60 potatoes x 4 ounces/potato = 240 ounces, or 15 pounds.

This is a rough estimate. You might want to round up to 20 pounds to be safe.

Recommendation:

* Consider the other factors above.

* If in doubt, always err on the side of more. It's better to have extra than to run out!