Cómo se hace:
Lightly MUDDLE mint (just to bruise) in base of glass. Add rum, lime juice and sugar. Half fill glass with crushed ice and CHURN (stir) with bar spoon. Fill glass with more crushed ice and CHURN some more. TOP with champagne, stir and serve with straws.
A mojito topped with champagne instead of soda water. There's posh.