Lemongrass Ginger Ale
Note/How to know when it's ready:
Remember to use a plastic bottle. .The gases from the fermentation can crack a glass jar.
Those 2 liter soft plastic soda bottles will work just fine. Recycle, recycle.
Feel the bottle by squeezing the sides. When you've just filled it, it's nice and soft and squeezable. After about a day or 2....or 3, you can feel it's more resistant. Refrigerate the bottle once it's ready, to stop further fermentation.
There will be a little residue at the bottom. Not to worry, it's just the yeast. Throw the last bit away when you get to it.