Cut off the edges of your lime so you can lay it flat on all sides

Then cut it in half lengthwise

Remove the white middle center of the lime

Then cut your limes half in half again lengthwise so you have four pieces

Add limes to the shaker with the sugar

Muddle for about a minute pressing on skins and release juice and oils from the skins. You should have a slushy at this point

Add 2 oz of cachaca and about a half cup of ice

Cut your second lime into round slices 

Pour your drink and all the ice from the muddler into low ball glass

Cut a sliver in half of a lime wheel and garnish your glass