It’s National Margarita
Authentic Margaritas are made with bitter Mexican limes (key limes). These are smaller thin-skinned limes, much more tart than regular limes.
The first frozen margarita machine was invented by a high school drop-out named Mariano Martinez in 1971.
The International Bartenders Association official standard for the margarita is 7:4:3, that is 50% Tequila, 29% Cointreau, 21% fresh lime or lemon juice.
The ‘Origin’ Myth about the Margarita is that in October 1941, a bartender at Husson’s cantina in Ensenada, Mexico created the drink for Margarita Henkel, a well-known German celebrity, making the claim that they are the home of the original margarita.