01 -
Use a mandoline or peeler to create thin cucumber slices, either ribbon-like or disk-shaped, and drop them into a large pitcher.
02 -
Toss in the mint leaves and press them lightly with the cucumbers to release their flavor.
03 -
Squeeze out the juice from one and a half lemons (or limes) into the pitcher. Keep the remaining half for decorating later.
04 -
Pour in the lemon seltzer and give everything a good stir until blended.
05 -
Pour the drink into glasses over plenty of ice, and finish with mint sprigs or lemon/lime slices if you'd like.