Water Kefir is amazingly good for you. It is naturally antibiotic and antifungal, and contains a variety of healthy bacteria and yeast, as well as vitamins and minerals. WaterKefirGrains.com has a whole list of the benefits, but there's nothing bad about it. Natural detox and rebalance, what more can you ask for?
Once you have the grains, they will multiply and potentially live forever. You can buy grains online, or you can get 1/4 cup of grains from someone that already has live water kefir. Lucky for me, my sister is my source for all healthy and random foods, and gave me water kefir grains a couple months ago.
Store the water kefir grains in water in the fridge.
To make water kefir:
Drain and rinse the grains.
In a quart sized mason jar (or other glass jar with a tight fitting lid), dissolve 1/4 cup sugar in water. Add in the grains, 1/4 lemon, 1/4 cup of raisins. You can use a variety of different fruits. Don't be intimidated by the sugar. The grains eat the sugar, it's not like drinking soda.
Here is what it looks like after 24 hours.
And 48 hours. If you look very closely, you can see that tiny carbonation bubbles have formed.
Using a spoon, remove and discard the raisins. Squeeze the lemons into the kefir and discard rinds. Strain kefir grains, reserving liquid. Split water kefir between two pint sized mason jars, seal, and put in the refrigerator. Allow to sit, sealed, in the refrigerator for at least a day. This allows more carbonation bubbles to form. Rinse and cover grains with water in a sealed jar in the refrigerator.
I really enjoy the flavor of water kefir. It's carbonated, not like soda, but more like sparkling water. It has a very low alcohol level from the fermentation, and the hints of fruit from the raisins and lemons make it naturally sweet. It's refreshing and a nice change from water.