Spoon 3 to 4 tablespoons of popping boba into the bottom of your glass. Fill the glass with crushed ice, pressing it gently to hold it in place.

In another cup, combine the blackberry syrup, passionfruit syrup, white grape juice, lemonade, cold water, and green coffee extract (if using). Stir for about 15 to 20 seconds until well mixed. It should turn deep purple. Slowly pour the mixed liquid over the ice, tilting the glass slightly and pouring along the side to keep the boba layer in place.

Lightly stir with the long spoon to mix the top layer, add a lid and a wide straw for the boba, and serve immediately.