Raisins and citron were the two most commonly used dried fruits in election cakes, but I like to use equal amounts of a large variety of fruit, such as dried sour cherries, blueberries, citron, and dark and golden raisins.
Citrus bergamia, as it's known in botanical circles, first showed up 300 years ago in Southern Italy, the result of crossbreeding a sour orange with "something else, " variously identified as a citron, a lemon, a lime or a Palestine sweet lime.