this is great! Im a kefir fun too. I keep my nodules in a plastic jar .
I add a glass every morning ,(right after I drink yesterdays kefir) and put it back in the fridge. Just cause im lazy and i dont have more than 5 min. for my breakfast i dont use the strainer.(Lips and teeth do the work) :)
During summer, i put right back in the fridge , for winter it goes in the fridge after 6 hours or so.
Very important : dont use any metalic (conteiner or tools) kefir doesnt like it AT ALL!
keep walking!