A friend & I stopped in a little town in Kansas for lunch one day...there were two small restaurants. We flipped a coin....we lost. He ordered fried chicken, I ordered a hot beef sandwich. We both took a bite and looked at each other. His chicken looked 3 days old and dried out...and not well plucked. My 'beef' was tough and full of gristle....and when I tried the mashed potatoes, there was this strange, but oddly familar flavor...I tasted it several times, trying to pin it down...until suddenly it hit me! Watermelon! It was like the gravy and/or potatoes had sat in the refrigerator under a drippy piece of watermelon. I tried to wash it down with iced tea....almost transparent tea with that 'tang' you get at 2½ days old. We left. Got a hamburger 30 minutes later.