Make the Summer Berry Refresher Base: Add all the base ingredients to a medium saucepan and whisk together over low heat until everything is combined and the blue spirulina is dissolved. Remove from heat, transfer to a large jar, and allow to cool completely before using.
Pour ½ cup of the refresher base, ½ cup lemonade, and a handful of ice into a cocktail shaker or large jar with a lid and shake until well combined. Set aside.
Add the raspberry boba to a tall glass, then add a handful of ice. Strain your refresher from the cocktail shaker/large jar into the tall glass over the raspberry boba. Add a boba straw and drink up!
Notes
Note: This makes 3 cups of base, enough for 6 drinks. Store any leftover refresher base in the fridge for up to 1 week.