The Army cooks made the fatal mistake of cooking. [fact]
When there was a shortage of potatoes in the Middle East during the war, the Army cooks made the fatal mistake of cooking sweet potatoes like chips, with the result that the whole of the Eighth Army grew to detest these vegetables, and it is true that they are not good when treated as an ordinary potato and served as an adjunct to meat.
David, Elizabeth, Book of Mediterranean Food, loc. 526