I have a sodastream, and for the most part it makes great carbonated water. However, any time I try to use the flavoring syrups, my drink becomes completely flat. I do follow the instructions and only carbonate water (no pumping bubbles with the syrup already mixed in).
I've tried all techniques I could think of: stirring syrup into fizzy water, pouring fizzy water over syrup, pumping syrup into fizzy water without mixing. Basically, if I don't stir, all the syrup goes to the bottom of the glass, and if I do stir, the bubbles are gone. I've tried refrigerating the syrup, room temp, warming it. The best technique I have come up with so far is to add a little bit of carbonated water, pour in the syrup, mix that up, and then add the rest of the carbonated water. I like to believe this "loosens" the syrup so it mixes into cold water a bit better. However, even with this technique, the drink is flat.
Does anyone else experience this? Anyone have suggestions?