Combine and boil grapefruit juice and strawberries. Simmer until all strawberries are broken down.
Strain the mixture in a bowl and collect the liquid and return to a heat source.
Add acai powder, green coffee powder, and passion fruit flavor. Stir until all powders have dissolved. Remove from heat and store in a jar. Your base is now ready for use.
Make the refresher. Add freeze-dried strawberries to a cup and fill with ice.
Add your strawberry acai base and freeze-dried strawberries with ice to a shaker and shake well to combine.
Add your combined drink to a glass. You can add lemon juice for a citrusy taste. Take a sip and see if it is to your liking.