
When I started making kefir about a month and a half ago, I used a liter container that produced too much of the tart, fizzy fermented milk. I had to change out the milk in the container nearly every day, or else keep the container in the fridge, where it languished and produced weak and mild kefir. Since then, I have found a nice rhythm. I switched to a pint Ball jar, which I keep filled with fermenting milk at room temperature, changing out approximately half the volume every other day. When I refresh the jar, I pour out some of the finished kefir, which goes in a container in the fridge, and top the jar off with milk. This method, which keeps some milk in the jar for longer fermentation, seems to make a thicker and more consistent kefir. I produce between a half-cup and a cup of kefir every other day, which just about perfectly keeps up with my consumption. I use about a half-tablespoon of grains in the pint jar&mdash any more and the kefir ferments too quickly and separates.

The photo shows a very healthy clump of kefir grains&mdash my original photo showed both the grains and some thickened lumps of kefir. When mixed, the kefir becomes liquid and smooth, while the grains remain separate, distinct and rubbery.