notung,
For all your kefir interests, check out this place:
http://users.sa.chariot.net.au/~dna/Makekefir.html
Basic Water Kefir Recipe:
3 Tablespoons water kefir grains
2 Tablespoons sugar
1.5 Cups water
lemon (if you can't find an organic lemon, then take the skin off first)
A dried fig, or a tablespoon of sultanas or raisins
(Optional: add 2-4 teaspoons of fresh ginger root juice to make a refreshing ginger beer kefir. To make the ginger root
juice, pound or chop finely about 60g fresh ginger root and blend it to a mash with half a cup of water. Strain through
a cloth, squeezing out the juice. You can also use dried ginger powder. Boil 1-2 tablespoons of ginger powder with 1
cup of water and then strain through a fine cloth. Cool this liquid before adding it to your brew.)
I make this quantity of kefir (or a double batch if I have more grains) in a 1 quart (1 litre) glass preserving jar.
Whatever jar you use, please make sure you leave an inch or so at the top to accommodate the carbon dioxide gas
produced by the fermentation process and avoid explosions! As your kefir grains reproduce themselves, you will
need to adjust the ratios of ingredients for a bigger batch, or make more batches.
Method:
*Strain and rinse the grains under clean running water.
*Put them in the jar with the other ingredients, and stir until the sugar dissolves.
*Close the jar with a good firm lid, and leave it at room temperature to ferment. Stir after 24 hours, and as often as
you like.
*Brew until the raisins float to the surface and the liquid is a bit fizzy. This might take about 48 hours, but might be a
good deal faster when the weather is warm.
*Scoop the lemons and raisins off the top of the liquid.
*Now use a strainer to separate the water kefir grains from the liquid. Rinse the kefir grains thoroughly under cold
water.
*Squeeze the lemon into the liquid and put it into sealed bottles or jars. You can chill and drink the beverage now, if
you wish. Or you can leave it to ferment (secondary fermentation) for another day or so at room temperature, before
moving it to the fridge to chill for drinking. (Further fermentation will increase the alcohol content of the drink,
depending on the amount of sugar in the liquid. In any case, water kefir drinks seem to be only very mildly alcoholic
like home-made ginger beer.)
Other Tips:
*Once you have made your first batch of water kefir, you can rinse the grains and start the next batch immediately.
*If you don't want to make another batch immediately, you can store the grains in the fridge in a sugar water solution
(1Tablespoon of sugar to 1 Cup water) for up to 7 days. You can also freeze strained, rinsed water kefir grains in
plastic ziploc bags for up to 2-3 months.
*Sugar: Apparently the grains do best on less-refined, more mineral-rich sugars, though any kind of cane sugar will
do (refined white sugar, golden sugar, muscovado, rapadura).
*Water: The grains do best in hard, highly mineralised water. If you are using soft or distilled water, add teaspoon
of baking soda per 6 cups of water to keep the grains healthy.
*Fermentation time: One of the main reasons why water kefir grains become sick and stop propagating is over-
fermentation. In general, they should be brewed no longer than 2 days, though they may need 3 days in colder
I have not played with the kombucha tea colonies in a very long time. There was a fad that was running through the ?80's/early 90's? and I tried it, it was rather tangy from all the acids produced, acetic acid of course is what puts the sour in vinegar, maybe that attests to the health claims of ye olde days, kind of like how sucking on lemons/limes cured scurvy from the ascorbic acid intake. I do remember old farmers almanacs that would list a daily dose of vinegar having health promoting benefits, again not backed up with any decent studies to my knowledge.
Most of the health benefits have not been backed up with any decent studies and a few people react to the kombucha tea with slightly enlarged livers. So I have not kept it up and don't recall if I just emptied my plant down the olde gurlger.
Brewer Pete