Step 1.
- In a blender, combine 2 cups of watermelon cubes and blend until smooth.
Step 2.
- Strain the watermelon puree through a fine mesh sieve into a large pitcher, discarding the pulp.
Step 3.
- Add 1 cup of fresh lemonade to the pitcher and stir to combine.
Step 4.
- Pour in 1 cup of vodka and mix well.
Step 5.
- Fill highball glasses with ice and pour the watermelon lemonade mixture over the ice.
Step 6.
- Garnish each glass with a lemon wheel and a sprig of mint.