Cinco De Mayo: Yummy Margaritas!!! COCO AND COWE Cinco de Mayo, a celebration that commemorates the Mexican army’s 1862 victory over France at the battle of Puebla, has since evolved into a celebration of Mexican culture and heritage. To celebrate this national day, we’re showing you how to make the tastiest margaritas with Cointreau and Patron. Click the photo above to see how! Happy Cinco De Mayo! Karen Michelle//. This is an excerpt from the article Cinco De Mayo: Yummy Margaritas!!! which originally appeared on http://cocoandcowe.com/.