Gather all ingredients and tools (shaker, glasses, strainer).
Choose your base spirit (vodka, gin, etc.).
Muddle fresh fruits and mint leaves in a shaker.
Add ice to the shaker.
Pour in the spirit and simple syrup.
Shake vigorously for about 15 seconds.
Fill a glass with ice.
Strain the cocktail mixture into the glass.
Top with club soda or tonic water.
Garnish with extra fruit or mint leaves.