You'd think it would be Cinco de Mayo, but no, February 22nd is National Margarita Day. My personal recipe uses no sour mix...just 4 basic ingredients. Cheers!
2 oz. Patron silver tequila (3 oz. is even better!)
1/2 oz. Cointreau orange liqueur
4 oz. pineapple juice
1/2 oz. fresh-squeezed lime juice
Fill a cocktail shaker or tall glass with ice and add all the ingredients. Stir vigorously. Pour into a large margarita glass. Garnish with a lime wedge. Salt optional.