How many pounds of potato do you need to feed 170 pp?

I need more information to answer your question accurately! Here's why:

* What kind of meal is this? Are you serving potatoes as a side dish, or are they the main ingredient?

* What are you serving the potatoes with? A meal with a lot of other food might require less potato per person.

* What size are the potatoes? A large potato will feed more people than a small one.

* How are you preparing the potatoes? Mashed potatoes will require more potato per serving than roasted potatoes.

To help you figure this out, I recommend:

1. Consider the serving size: A standard serving of potatoes as a side dish is about 1/2 cup.

2. Choose a recipe: Find a recipe for the potato dish you want to make. It will likely give you an estimated yield per serving size.

3. Adjust for your guest count: Multiply the recipe's yield by 170 to get the total amount of potatoes you'll need.

Let me know if you can provide more details about your potato dish, and I can help you estimate the amount you need!