2 cups hot water
1/2 cup white sugar
1/2 cup lemon juice from concentrate
1 lemon, juiced
1/2 large cucumber, sliced
3 (12 fluid ounce) cans or bottles lemon-lime flavored soda
2 cups ice cubes, or as needed
1 lemon, thinly sliced
1/2 large cucumber, sliced and then halved
Stir hot water and sugar together in a large pitcher until sugar is dissolved. Stir in lemon juice concentrate, lemon juice, and sliced cucumbers. Refrigerate for 30 minutes or until ready to serve.
Pour lemon-lime soda into pitcher. Serve lemonade over ice and garnished with lemon slices and halved cucumber slices.