01 -
Add frozen blueberries, frozen strawberries, ice, vanilla syrup, cranberry juice, and key lime juice to a 32-ounce widemouth container.
02 -
Secure the lid tightly and shake vigorously for 30 seconds until well chilled and berries begin to break apart.
03 -
Add additional ice if desired, then pour into two glasses or enjoy directly from the container using a straw.