The Margarita was invented in 1961. The Blue Margarita came along later, most likely when somebody reached for the wrong bottle and boom! It's easy, it's fun and after a few, the Blue Curacao spilled on your shirt looks kinda cool. Kinda. Let's get mixin'!
3 parts Tequila
2 parts Blue Curacao
1 part lime juice
Coarse salt & sugar for the rim
Lime for garnish
Wet the rim of your glass with lime juice.
Cover the rim with a mixture of coarse salt & sugar.
Pour the ingredients into a shaker with ice.
Strain into the glass either 'up' or with fresh ice.
Garnish with a lime wedge/wheel.