Cinco de Mayo is a Mexican holiday that commemorates the Mexican army’s win during an obscure battle with French forces in 1862 over land that would eventually become the State of California. Californians have been celebrating the date annually since, but according to Southern California Quarterly, it is virtually ignored in Mexico but for the state of Puebla.
Celebrations consist of food, music, dancing and drinking. And in San Diego, it is customary to knock off work at lunchtime, head on over to the Old Town section of town via the trolley, and, then order up some of these.
Usually one is all you need, unless you live in San Diego, where a Margarita on the rocks is the official drink, in which case, you’ll need two. Food is entirely optional, but highly recommended.