1. Wash cucumber well. Cut a few thin slices longwise and set aside for garnishing. Please note: It is not necessary to peel the cucumber.
2. Chop remaining cucumber; add 2 cups of water in blender with cucumber pieces and sugar.
3. Blend for 3-4 minutes or until sugar dissolves. Strain blended mixture to remove any solids and add remaining water in a large bowl.
4. Add salt, lemon juice, ice cubes, lemon zest and stir well to combine. Strain again if preferred.
5. Pour into the serving glasses. Add more ice cubes if required or chill and serve, garnish with cucumber slice and/or lemon wedges.

Note:

To garnish glass as in the photo shown, first add ice cubes in a glass and then twist the long cucumber slice and twist it into the side of the glass and pour lemonade on top. Ice cubes will hold the cucumber slice in place. Thin round slices can be used instead if preferred.