|A kefir grain, yesterday|
Kefir contains several major strains of friendly bacteria not commonly found in yogurt, Lactobacillus Caucasus, Leuconostoc, Acetobacter species, and Streptococcus species.
It also contains beneficial yeasts, such as Saccharomyces kefir and Torula kefir, which dominate, control and eliminate destructive pathogenic yeasts in the body. They do so by penetrating the mucosal lining where unhealthy yeast and bacteria reside, forming a virtual SWAT team that housecleans and strengthens the intestines. Hence, the body becomes more efficient in resisting such pathogens as E. coli and intestinal parasites.
Kefir’s active yeast and bacteria provide more nutritive value than yogurt by helping digest the foods that you eat and by keeping the colon environment clean and healthy. Because the curd size of kefir is smaller than yogurt, it is also easier to digest, which makes it a particularly excellent, nutritious food for babies, the elderly and people experiencing chronic fatigue and digestive disorders.
I couldn't wait so I sat in the park on the way home and chugged one of them. It might have been the "20% off" sticker on the tub, but as soon as I got back to the office it was pants down and a case of chutney-bot.
So what does the Japanese say?
"Kefir yoghurt contains live yeast so expels gas. Not to worry though, because this container is capped off with a strong aluminium seal. Take care when opening because little bits might spit out."
Kinds of gut friendly bacteria in kefir is written in this post about probiotics.
Nothing important written there then.