Agua Fresca de Pepino               
Ingredients:
3 quarts water
3 English cucumbers, peeled and coarsely chopped
7 limes, juiced to yield 1/2 cup
1/4 cup sugar, or more as desired
Directions:
Place 1/2 cup water in blender or food processor with 1 cup chopped cucumber
Blend until smooth. 
Add more cucumber and blend again
Continue until all cucumber is pureed
Strain cucumber juice into large pitcher with a mesh sieve to remove seeds
Add remaining water, lime juice and sugar to taste
Chill before serving
Yields 4 -12 oz servings