You can purchase kefir at the grocery store but I personally wouldn't recommend that over making it yourself and I will explain why in the next installment of this series: «what are fermented foods?» (homemademommy.net)
If you're not yet convinced, stay tuned to the next installment of this series. (polishedwhimsy.com)
In the next installment of the series, we'll go over what to do next. (datingsitesreviews.com)