Frozen kefir is one of those desserts that sounds unfamiliar right up until the first spoonful — and then it clicks. In short, it is kefir, a fermented and cultured dairy, strained and frozen into something soft, creamy and refreshingly tangy. If you already know the clean sourness of a good glass of kefir, frozen kefir is that same character served cold and scoopable. This is a simple guide to what it is, where it comes from, how it tastes and where you can try it in London.
So, what exactly is frozen kefir?
Frozen kefir is a frozen dessert made from kefir — a cultured dairy that has been part of kitchens across the Caucasus and Eastern Europe for generations. Where ice cream is built on cream and sugar, and frozen yogurt on ordinary yogurt, frozen kefir begins from a living, fermented base. It is strained until thick, then frozen gently so it sets smooth rather than icy. The result is light, creamy and clean-tasting.
The quickest way to picture it is to imagine a scoop of soft frozen yogurt, only with a brighter, more grown-up tang. For the full definition, our page on what frozen kefir is goes into more detail.
From kefir to frozen kefir
To understand the dessert, it helps to start with the drink. Kefir is made by fermenting milk with a broad community of cultures — a more diverse mix than the one or two strains typically used to make yogurt. That fermentation is the whole point: it is what gives kefir, and in turn frozen kefir, its signature fresh, slightly sour note.
Fermentation also changes the milk itself. As the cultures do their work, they consume some of the milk's natural sugars, which is why kefir is naturally lower in lactose than the milk it started from. To become a dessert, the kefir is strained to a thick, spoonable consistency and then frozen slowly enough to keep its texture soft rather than crystalline. If the ingredient itself is new to you, our guide to what kefir is covers the basics.
Made from cultured dairy — that's the real difference
This is the line that sets frozen kefir apart from most of the freezer aisle. It is not flavoured cream, and it is not a fruit sorbet. It is cultured dairy, frozen — and when it is served fresh it still contains live cultures. That heritage is exactly what gives the dessert its personality on the spoon.
What does frozen kefir taste like?
Expect a clean, bright tang: the freshness of really good cultured dairy, turned cold and creamy. It is noticeably tangier than frozen yogurt and far less sweet than ice cream, finishing clean on the palate rather than coating it. People who find ice cream a touch too rich or too sweet often take to frozen kefir straight away, because it feels lighter and more refreshing without ever tasting thin or watery.
The tang is the signature. Rather than expecting a sugary hit, lean into that freshness and the dessert quickly becomes moreish — the kind of thing you finish and immediately understand.
What about sugar?
One of the defining features of Snowfall's frozen kefir is that it has no added sugar. Instead of sugar, it is sweetened with stevia and erythritol, which lend a rounded sweetness while letting the culture's tang come through. The aim is a dessert that still tastes like a proper treat, without sugar doing the heavy lifting.
Frozen kefir is a dairy product and naturally contains a small amount of milk sugars. “No added sugar” means no sugars or sweetening foods are added; sweetness comes from stevia and erythritol.
Where to try frozen kefir in London
Frozen kefir is still a rare find on the British high street, which is part of what makes it worth seeking out. Snowfall makes it fresh at its shop in Marylebone, in central London — reason enough on its own for a wander through the neighbourhood's quieter side streets. If you would like to taste it for yourself rather than take our word for it, our Marylebone page has the address and the latest opening hours.
In one line: frozen kefir is a fermented, cultured frozen dessert with live cultures and no added sugar — made fresh at Snowfall in Marylebone.