Lemon Ice
A recipe from the Sneaky Kitchen
4 cups water
2 cups sugar
3/4 cup freshly squeezed lemon juice

Put water and sugar in a pan and boil for five minutes.  Cool.  Add lemon juice.

Freeze in ice cube trays.  Just before serving, pop the frozen cubes into a food processor or blender and "smoosh" them (but don't let them melt).