I have especially ordered because of the positive reviews of this set, to test the Dampfbarkeit these flavors times. According to declaration is in some of these flavors citric there - whether the compatible with the evaporator heads, I dare I to doubt. In addition, it tastes too acidic. Banana and blueberry, however, are definitely dampfbar, the two flavors taste even better than expected me. Especially Blueberry pleasantly surprised me. Nevertheless, there are four stars because the mineral taste all the flavors quite passable and for that they are actually also provided. It remains - at a reasonable dosage - with a touch of flavor. Who expects to see a miracle elixir that turns water into a lemonade or even an apple juice, you should rather leave it alone ...