Juice the lemons into a large pot. Throw the rinds in there, too.
Add the sugar to the pot and muddle with the lemon rinds and juice for 2 to 3 minutes.
Add the water and stirThe flavors of cucumber and lemon are delicate, so you don’t want to boil the syrup. until the sugar has dissolved.
Strain into a 3-quart pitcher and add the cucumber. Steep for 1 hour.
For punch: Add 24 fluid ounces of gin and stir to combine. Serve over ice.
For a single cocktail: Place 4 to 5 ice cubes in a rocks glass. Add 1 ½ fluid ounces of gin and 2 ½ fluid ounces of lemonade. Stir to combine and serve immediately.
