Cut the half lime into four pieces. Remove the stems from the strawberries and cut into quarters.
Place the lime, strawberries and sugar in the bottom of a rocks glass (short thick-walled glass). Muddle them together well to get lots of juice out of the lime and break up the berry pieces.
Add the cachaca to the glass then either transfer to a shaker with some ice and shake well, or add ice to the glass and stir to mix and cool.
If you like, you can transfer the mixture to a fresh glass or simply leave in the one you built the drink in, topped up with extra ice if needed.
Notes
Typically this would be serve unstrained, but you can strain the drink if you prefer. If you prefer a sweeter drink, you can add a little more sugar.Traditionally you use cracked rather than whole chunks or crushed ice for this, but use as you have/prefer.