Now for my first full post on a non-beery topic, although some similarities are apparent, especially in the way the concoction in question is consumed.
Kefir is one of a number of fermented milk drinks made and consumed in large quantities around the world but not well known in the UK or other Western markets. Thought to originate in the northern Caucasus, this example, Nourish Kefir, comes from a dairy near St. Pancras, London. Carr Foods, the company behind Nourish, is seeking to raise awareness of this ancient beverage and has already achieved a decent level of distribution for Nourish, largely in the greater London area but increasingly further afield. My bottle came from very near its point of origin, Alara Wholefoods in Marchmont Street, just down the road from St. Pancras station.