Potato Salad QuanityJOYCEANN6:
Good evening to you. Joyce, The reason that this question is difficult to answer is "That AMOUNT also depends on the quality of that dish. If it isn't very good 1 1/2 oz per MAYBE a lot.....on the other hand if it is very good quality 4 oz per person may not be enough.
Now then Joyce, I sometimes make myself 2 to 2 1/4 pounds of NY German deli potato salad. I eat 4, oz for 1 rather large Kaiser roll with cold cuts. To be safe remember Joyce, you must allow between 15 to 22.5% of waste due to the peeling & brown spots you sometimes get in the potatoes. Also there are those who will eat twice as much & those who may just taste some. I would allow 7, oz per then add 1.5, oz for waste. Soooo, 200 people X approx. 8.5 oz= 1700, oz, divided by 16 that = 110, pounds of new potatoes either red rose or white rose or a combonation of both. Joyce do not forget approx. 8 to 9 pounds of chopped onions, & 4 1/2 to 5, quarts of mayo.
Good luck & enjoy the rest of the day young lady.