Amusingly, even thought I live in Berlin and have it readily available, I tried to make it myself by making mate concentrate, sugar, and a tiny bit of lemon. I

Amusingly, even thought I live in Berlin and have it readily available, I tried to make it myself by making mate concentrate, sugar, and a tiny bit of lemon. I got the taste just about right, but more mate-y with the really grassy, earthy taste of mate. But it had so much caffeine that I couldn't think straight and felt jumpy. I came to the conclusion that Club Mate doesn't actually contain much mate. But if you love the stuff and can't get it, it's not hard to experiment. Those are basically the only ingredients.