Add the sugar and limes to a cocktail shaker and smash a few times with a muddler. Fill a highball glass with the crushed ice. Fill the glass with cachaca, leaving 1 inch from the top. Pour the glass into the cocktail shaker, and shake really well. Move the cocktail back into the glass, pull out a straw and enjoy the buzz.
Recipe courtesy of Gabriele Corcos and Debi Mazar