Kefir grains substitutes
Kefir grains substitutes — 6 options, ranked, with the exact amount
Use Powdered or freeze-dried kefir starter culture
1 sachet per 1 quart / 1 litre of milk, per the packet
If you want to make kefir and cannot get grains, use a powdered kefir starter culture, one sachet per quart of milk, following the packet, or simply use store-bought plain live kefir as a starter at about 2 to 3 tablespoons per cup of milk, left at room temperature for 12 to 24 hours. Both produce a genuine, drinkable kefir. The honest catch is that neither propagates forever the way grains do: expect roughly three to seven successive batches from a backslopped culture before the flavour thins out and the fermentation slows, at which point you start again. If you just need kefir for a recipe and are not set on making it, buy a bottle.
- Verdict —
- Works
- Best for —
- making kefir with no live grains available
Updated 19 Aug 2026 · no sponsored swaps
Every option, one card
Ranked| # | Substitute | Instead of kefir grains | Verdict |
|---|---|---|---|
| 1 | Powdered or freeze-dried kefir starter culturemaking kefir with no live grains available | 1 sachet per 1 quart / 1 litre of milk, per the packetWorks | Works |
| 2 | Store-bought plain live kefir used as a backslopmaking kefir today with only a supermarket trip | 2-3 tablespoons kefir per 1 cup milk, or ½ cup per quartTweak it | Tweak it |
| 3 | Live plain yogurt as a starterany recipe that wants thick soured dairy | 2 tablespoons yogurt per 1 cup milk, held at 40-45 C for 5-8 hoursYou'll taste it | You'll taste it |
| 4 | Live cultured buttermilk as a startersoured milk for biscuits, cornbread and pancakes | 2-3 tablespoons buttermilk per 1 cup milk, held at cool room temperature 12-24 hoursYou'll taste it | You'll taste it |
| 5 | Water kefir grainsfermenting sugar water or fruit juice | Not a workable swap for milk kefirYou'll taste it | You'll taste it |
| 6 | Just buy plain kefirbaking | Use directly in place of the kefir you were going to makeWorks | Works |
Powdered or freeze-dried kefir starter culture
similar taste and texture
A dried, measured blend of kefir bacteria and yeasts sold in sachets, designed as a direct replacement for grains.
- Best for
- making kefir with no live grains available, consistent results batch to batch, a first attempt before committing to grains
The closest substitute and by far the most reliable. It gives you real kefir with the right sour, faintly yeasty flavour and a light fizz, and because the strain mix is fixed, every batch tastes the same. Two differences from grains: the drink is usually a touch milder and less complex, because grains host a wider and wilder community of organisms; and the culture is not self-sustaining, so although you can usually reculture a few times by saving some kefir, it fades after several generations and you buy another sachet. There is also nothing to strain out and nothing to feed.
Store-bought plain live kefir used as a backslop
different taste, similar texture
Using a bottle of unflavoured, unsweetened kefir with live cultures to seed fresh milk, the same trick people use to stretch a yogurt culture.
- Best for
- making kefir today with only a supermarket trip, stretching one bottle into several, baking, marinades and smoothies where absolute authenticity does not matter
This genuinely works. Stir it into room-temperature milk, cover loosely, leave it 12 to 24 hours somewhere around 20 to 25 C, and you get a tangy, thickened, slightly fizzy drink. Where it differs is that a bottle of commercial kefir contains only the strains that survived pasteurisation, chilling and shelf life, and the yeasts are usually the first to drop out. So the result is sourer and cleaner, with less of the bready, champagne-like aroma real grain kefir has, and each generation drifts further from kefir toward plain soured milk. Save a few tablespoons of each batch to seed the next, and expect to buy fresh kefir again within a week or two.
Live plain yogurt as a starter
different taste and texture
Culturing milk with yogurt bacteria instead, which is easy and delicious but produces yogurt, not kefir.
- Best for
- any recipe that wants thick soured dairy, baking, marinades and dressings, when the goal is fermented milk rather than kefir specifically
Be clear about what you are getting. Yogurt cultures are thermophilic and contain no yeasts, so they need real warmth to work and produce a thick, set, cleanly sour curd with no carbonation and no yeasty note at all. That is a different drink and a different texture: spoonable rather than pourable. Good if you wanted cultured dairy for cooking; not kefir if you wanted the fizz.
Live cultured buttermilk as a starter
different taste and texture
A mesophilic culture that ferments on the counter without any heating, like kefir grains do.
- Best for
- soured milk for biscuits, cornbread and pancakes, counter-top fermenting with no equipment, marinades
The easiest option of all, since it needs no warm spot and no sachet, and it will convert milk into a pleasantly tangy cultured milk overnight. It is not kefir: there are no yeasts, so nothing fizzes and there is no bready aroma, and the flavour is straightforwardly sour with a faint saltiness. If the reason you wanted kefir was acidity for baking, this is entirely sufficient and cheaper than everything else here.
Water kefir grains
different taste and texture
The translucent, crystal-like grains used to ferment sugar water, sometimes sold alongside milk kefir grains and often confused with them.
- Best for
- fermenting sugar water or fruit juice, dairy-free fizzy drinks
Worth listing precisely so you do not waste your money. They are a different community of organisms adapted to sugar and water, and although they will sour milk once or twice, they do it poorly, produce a thin unpleasant result, and gradually die because milk is not their food. If you want dairy kefir, buy milk kefir grains or a milk kefir starter.
Just buy plain kefir
similar taste and texture
The obvious answer when the recipe wants kefir rather than the process.
- Best for
- baking, smoothies, salad dressings and marinades, drinking today
If a recipe calls for a cup of kefir, you do not need grains at all, and hunting for a culture is solving the wrong problem. Buy plain unsweetened kefir and use it as written. Grains only matter if you want an ongoing supply, want to control the sourness and thickness yourself, or want the wilder flavour that a mature grain culture develops.
Questions
5 questionsCan I make kefir without kefir grains?
Yes. A powdered kefir starter sachet is designed for exactly this and gives you a proper kefir. Alternatively, stir 2 to 3 tablespoons of plain live store-bought kefir into a cup of milk and leave it loosely covered at room temperature for 12 to 24 hours. Both work; neither gives you a culture you can keep going indefinitely.
How many times can I reuse a starter instead of grains?
Usually about three to seven batches, and it varies. Each time you seed new milk from the last batch, the balance of organisms shifts, the yeasts tend to fade first, and the fermentation gets slower and the flavour flatter and more simply sour. When a batch takes noticeably longer to thicken or stops tasting like kefir, start over with fresh starter or a fresh bottle.
Can I use yogurt instead of kefir grains?
You can culture milk with yogurt, but you will get yogurt. Yogurt bacteria need to be held around 40 to 45 C and include no yeasts, so the result is thick, set, cleanly tart and completely flat, with none of the fizz or bready aroma of kefir. For baking and marinades that is fine. For a kefir drink it is a different thing.
Can I just leave the kefir grains out and skip the fermenting?
If the recipe wants kefir as an ingredient, yes, in the sense that you should buy kefir instead of culturing it, or use buttermilk 1:1, which is nearly identical in acidity and thickness. If the recipe is about making kefir, the culture is the entire process and there is nothing to leave out; you need grains or a starter.
Are kefir grains actually grains?
No, and the name confuses everyone. They contain no cereal and no gluten. They are soft rubbery clumps of bacteria and yeasts living inside a matrix of milk protein and a polysaccharide called kefiran, which is what makes them slippery and springy. You strain them out of the finished kefir and put them into fresh milk, and they last for years if fed.
Tips for substituting kefir grains
5 tips- The reason grains are special is that they are self-renewing, and no sachet or backslop matches that. Grains grow, so one tablespoon becomes two within a few weeks and can ferment milk more or less forever. Any substitute is a rented culture with a limited number of useful generations.
- Whatever culture you use, milk kefir is mesophilic and ferments at ordinary room temperature, roughly 20 to 25 C, over 12 to 24 hours. Do not incubate it like yogurt at 43 C; the yeasts suffer at that heat and you end up with something closer to sour yogurt.
- Judge doneness by look and smell rather than the clock. It is ready when the milk has thickened enough to coat a spoon, smells sharply sour and slightly yeasty, and shows small pockets of whey at the edges. Going too long makes it separate into curds and sour whey, which is still usable in baking but unpleasant to drink.
- Use pasteurised milk and scrupulously clean jars, and stick to glass, plastic or stainless steel. Ferment loosely covered, refrigerate as soon as it is done, and throw the batch out without tasting it if you see mould, pink or orange growth, or if it smells bitter, cheesy in a rancid way, or solvent-like.
- If you are backslopping from a bottle, buy the plainest, freshest kefir you can find with live cultures on the label, and avoid anything flavoured, sweetened, or heat-treated after fermentation, because added sugar and fruit feed the wrong organisms and heat-treated kefir has no living culture left to work with.