I need help with how much of each food to purchase. We are having three types of potatoes (I know but I can't talk my fiance out of it). I know that not everyone is going to eat each kind, I dont want to run out of one kind and have a ton of left overs from another kind. The types we are making are mashed potatoes, scalloped potatoes and augratin potatoes. Any advice can be emailed to me at email@example.com because I am not sure if I will be able to find this page again LOL.