Frozen Margarita

We had our office New Year's Party today. The office was divided into three teams and the teams all had to prepare a welcoming cocktail. This was the cocktail of my team! :)

Frozen Margarita:
3 Parts of Golden Tequila
2 Parts of Triple Sec or Cointreau
1 Part of Lemon Juice
Crushed ice
1 Slice Lemon for garnish
Salt for rimming the glass