What is the most popular drink in Brazil?

The most popular cocktail drink in Brazil is an achohol drink thats called the Caipirinha. The Caipirinha is Brazil's national cocktail, made with cachaça, sugar and lime.

Common ingredients in Caipirinha:
5.0 cl (1⅔ fl oz) cachaça
½ Lime cut into 4 wedges (or tahiti lime, but not green lemon)
2 teaspoons crystal or refined sugar

Preparation:
Place lime and sugar into old fashioned glass and muddle (mash the two ingredients together using a muddler or a wooden spoon). Fill the glass with crushed ice and add the Cachaça.