I have modified this recipe since I originally published it. I reduced the amount of lemon juice (from 3/4 cup), but kept everything else the same. This resulted in a much sweeter tasting drink as there is less bitterness from the lemon juice. Of course, if you like your drink more tart, keep the lemon juice the same as before. As always, you can alter the strength of your drink by changing the amount of club soda that you add.