For an extra chill, pre-chill your copper mug in the freezer for 15-20 minutes before preparing your Mule. Experiment with different flavors of kombucha to customize your Mule. Lemon, berry, or even herbal kombuchas can add unique dimensions to the drink. Adjust the amount of lime juice to your preference. If you prefer a sweeter drink, use slightly less lime. If you don't have a copper mug, a highball glass will also work well. For a non-alcoholic version, replace the vodka with club soda or sparkling water.