Base drink: Cut your strawberries into chunks and toss them into a saucepan. Pour white grape juice and bring to a boil then simmer for ten minutes. Remove mixture from heat and strain in a heatproof pitcher while pressing on the strawberries to extract all the fluid. Discard the strawberries and pour back your strained mixture back into the saucepan. In low heat, add acai powder, green coffee extract, and passion fruit powder and stir until everything is dissolved. Pour this mixture back into the pitcher and leave it to cool.