A one-quart pitcher is enough for about 4 highball glasses
Fill the pitcher 2/3 of the way with ice cubes
Place a chopped and peeled banana into a blender
Pour in 1.5 oz of coconut syrup and 8.5 oz of pineapple juice
Blend without adding ice and pour into the pitcher
Top up with club soda and stir gently
Garnish with red grapes