Richard from Northampton listens to Says You! on NEPR. He writes:
In the “odd one out” category at the second Amherst College quiz, the answer given was “apple cider” as the only item that could have been served at the first Thanksgiving. “Mashed potatoes” was ruled out because potatoes had not yet been introduced to North America. The same was true, of course, of apples: they were not native to North America, the quirky phrase “as American as apple pie” notwithstanding. Perhaps cider could have been brought on the Mayflower, but then, too, the Pilgrims could have brought potatoes, since they appear in an English herbal published in 1597. I was disappointed that no one in the Amherst audience pointed out the contradiction.