How much many potatoes do you need to make roasted serve 100 potatoes?

However, here are some things to consider:

* Potato Size: A small potato might only serve one person, while a large potato could easily feed two. You'll need to adjust the quantity based on the size of the potatoes you choose.

* Appetite: Are your guests big eaters? You might want to consider having 1.5 potatoes per person if you're expecting a hungry crowd.

* Other Side Dishes: If you're serving other side dishes alongside the roasted potatoes, you might be able to get away with a slightly lower number of potatoes.

Here's a general guideline:

* Small potatoes: 150-200 potatoes

* Medium potatoes: 100-150 potatoes

* Large potatoes: 50-100 potatoes

It's always better to have a little extra than to run out!