Wash cucumber and mint leaves thoroughly. Chop half the cucumber and set aside. Cut pineapple into chunks (about 2 cups). Juice the limes to obtain ½ cup juice.

In a high-speed blender, combine chopped cucumber, pineapple, lime juice, peeled ginger, mint leaves, and water. Blend on high for 30-45 seconds until smooth.

Taste the mixture for sweetness and add maple syrup if desired. Pulse for 10 seconds to incorporate.

Strain the mixture through a fine mesh strainer into a large bowl if a smoother texture is desired.

Transfer the blended mixture into a large pitcher filled with ice. Stir gently to chill.

Pour into glasses filled with ice. Add gin or vodka if desired and garnish with fresh mint leaves.