How to Make Butter at Home
By Mia Hartwell
Making butter is one of the few kitchen projects that is genuinely easier than people expect. There is no special equipment, no fermentation, and no waiting overnight. You put cream in a mixer, walk away for a few minutes, and it turns into butter. The first time it happens it feels slightly like a trick.
The one thing worth clearing up before you start is the ingredient, because a lot of people go looking for how to make butter from milk and come away frustrated. You cannot churn a jug of whole milk into butter. Butter is made from cream, and while cream does come from milk, the supermarket carton has already had it separated out.
This guide covers that distinction properly, the four ways to churn, the washing step that most recipes skip and that determines whether your butter lasts three weeks or one, what to do with the buttermilk you get for free, and how to turn it into compound butter.
Milk or Cream? The Part That Trips People Up
Butter is churned butterfat. When you agitate cream, the fat globules collide, break their protective membranes, and clump together into a solid mass, squeezing out the watery liquid we call buttermilk. The whole process depends on having enough fat in the first place.
Whole milk is about 3.5 percent fat. There is nowhere near enough for those globules to find each other, so churning it produces froth and then nothing. This is not a technique issue and no amount of extra time will fix it.
Heavy cream is around 36 percent fat or more, and that is what you want. Double cream at 48 percent gives an even better yield. Whipping cream at around 30 percent will work but produces less butter and takes longer.
If you genuinely want to start from milk, you need non-homogenised or raw milk. Homogenisation permanently breaks the fat into droplets so small they never rise, which is why ordinary supermarket milk will not separate no matter how long it stands. With non-homogenised milk, leave it in the fridge for 12 to 24 hours, and a thick cream layer will rise to the top. Skim that off and churn it. Do bear in mind that raw milk carries a genuine risk of foodborne illness, so use pasteurised cream unless you know and trust the source.
What You Need
- Heavy cream, 1 pint. This yields roughly 7 to 8 ounces of butter and about a cup of buttermilk. Regular pasteurised beats ultra-pasteurised on flavour.
- Something to churn with. A stand mixer, food processor, hand mixer, or just a jar with a tight lid.
- Ice water. For washing. This step is not optional if you want the butter to keep.
- A fine mesh strainer. To catch the butter and save the buttermilk.
- Fine sea salt, optional. About 1/4 teaspoon per pint of cream.
How to Make Butter
Around ten minutes of churning and another five of washing and working.
Take the cream out of the fridge first
Let the cream sit out for about 30 minutes so it reaches roughly 55 to 60F, cool to the touch but not fridge cold. This matters more than it sounds. Cold butterfat is hard and resists clumping, so cold cream can take two or three times as long to break, while cream at full room temperature makes soft, greasy butter that is a nuisance to wash.
Churn it, and keep going
Whip the cream on medium in a stand mixer. It will pass through soft peaks, then stiff peaks, then a stage where it looks grainy and curdled and slightly wrong. Do not stop here. This is the stage right before it works, and it is where most people give up thinking they have ruined it.
Watch for the break
After 5 to 10 minutes it separates suddenly and unmistakably into yellow granules of butter and thin, cloudy buttermilk, and the sound changes to a sloshing. Turn the mixer speed down as you approach this point, because the moment it breaks the liquid will try to leave the bowl. A tea towel over the mixer saves a lot of cleaning.
Drain and save the buttermilk
Pour everything through a fine mesh strainer set over a bowl, and press the butter gently against the mesh to release more liquid. Keep that buttermilk. It is thinner and sweeter than cultured shop buttermilk and it is excellent in biscuits, cornbread, and especially pancakes if you keep a jar of homemade pancake mix on hand.
Wash it until the water runs clear
Put the butter in a bowl of ice water and knead it with a spatula or clean hands. The water will turn cloudy. Pour it off, add fresh ice water, and repeat until the water stays clear, usually three or four changes. This is the step that determines shelf life. Any buttermilk left inside the butter will sour within a week, while washed butter keeps for two to three.
Work out the water, then salt it
Press and fold the butter firmly against the side of the bowl, tipping away liquid as it appears, until no more comes out. Then knead in the salt if you are using it, tasting as you go. Shape it into a block or roll it in parchment, and refrigerate.
Four Ways to Churn
| Method | Time | Effort | Notes |
|---|---|---|---|
| Stand mixer | 5 to 10 min | Hands off | The easiest way, use the whisk and a splash guard |
| Food processor | 3 to 5 min | Hands off | Fastest of all, but harder to judge the break |
| Jar shaking | 15 to 25 min | Tiring | No equipment needed, genuinely good with kids |
| Hand mixer | 8 to 12 min | Moderate | Works well, use a deep bowl to contain splashes |
The jar method deserves a mention on its own. Fill a jar no more than halfway with cream, seal it tightly, and shake. It takes 15 to 25 minutes and your arms will complain, but there is a satisfying moment when the sloshing stops and then starts again, and it is the version children tend to remember.
Cultured and Compound Butter
For cultured butter, the kind with a slight tang that European butters are known for, stir two tablespoons of live yoghurt or buttermilk into the cream and leave it covered at room temperature for 12 to 24 hours before churning. It will thicken and smell faintly sour, which is what you want. Chill it back down to 55F, then churn exactly as above.
Compound butter is where fresh butter really earns its place. Knead soft flavourings into the finished butter, roll it in parchment into a log, and refrigerate or freeze. Slice off coins as you need them. Herbs and lemon zest are the classic, but mashing in a few cloves of garlic confit makes something genuinely better than shop bought garlic butter, with none of the raw bite.
A slice of that melting over garlic butter salmon or garlic butter pork chops takes about four seconds of effort at the table and tastes like considerably more.
Common Mistakes to Avoid
Homemade butter is hard to ruin, but these are the mistakes that make people think it failed, or that quietly shorten how long it keeps.
Trying to churn whole milk instead of cream
This is the most common reason people give up, and it is not a technique problem. Butter is made of butterfat, and whole milk contains only about 3.5 percent of it, far too little for the fat globules to find each other and clump. You can churn a jug of whole milk for an hour and get nothing but froth, because the fat simply is not there.
Do this instead: Use heavy cream at 36 percent fat or higher. If you have non-homogenised or raw milk, leave it to stand for 12 to 24 hours, skim the risen cream off the top, and churn that instead.
Churning cream straight from the fridge
Cold butterfat is hard and resists clumping, so fridge cold cream can take two or three times as long to break, and sometimes stalls at the stiff peak stage entirely. People assume the cream is faulty and stop. Temperature, not the cream, is almost always the issue.
Do this instead: Let the cream sit out for about 30 minutes to reach 55 to 60F, cool to the touch but not cold. Do not let it come to full room temperature.
Stopping at the grainy stage
Just before it breaks, whipped cream goes lumpy and curdled looking, and it genuinely looks like something has gone wrong. A lot of people stop here thinking they have ruined it. In fact this is the stage immediately before success, and another thirty to sixty seconds of churning is all that is needed.
Do this instead: Keep going. The moment of separation is unmistakable: the mixture suddenly splits into yellow granules and thin, watery liquid, and the sound changes to a sloshing noise.
Skipping the washing step
This is the mistake that quietly ruins otherwise perfect butter. Buttermilk trapped in the butter is milk, and milk sours, so unwashed butter develops an unpleasant sharp, cheesy tang within about a week even in the fridge. The butter itself is fine, but what is trapped inside it is not.
Do this instead: Knead the butter under ice water, changing the water each time it clouds, until it runs completely clear. It takes three or four changes and roughly doubles the shelf life.
Leaving water in the finished butter
After washing, pockets of water remain trapped in the butter. Beyond making it spit alarmingly in a hot pan, those pockets are places where spoilage begins, and they make the butter softer and less spreadable in an unpleasant way. Homemade butter that weeps in the fridge has water still in it.
Do this instead: Press and fold the butter firmly against the side of a bowl with a spatula, tipping away liquid as it appears, until no more comes out.
Using ultra-pasteurised cream
Cream labelled ultra-pasteurised or UHT has been heated to a much higher temperature for shelf stability, and that heat gives it a faintly cooked flavour that carries straight into the butter. It will churn, but the result tastes flatter and less sweet than butter made from ordinary pasteurised cream.
Do this instead: Choose regular pasteurised heavy cream where you can, ideally from a local dairy. The difference in the finished butter is noticeable.
Pouring the buttermilk down the sink
What you drain off is real buttermilk, and it is not the same product as the thick cultured buttermilk sold in cartons. It is thinner and sweeter, and it is excellent in baking. Discarding it throws away roughly a cup of genuinely useful ingredient from every batch.
Do this instead: Strain it into a jar and keep it for pancakes, waffles, biscuits, scones, or cornbread. It lasts about a week in the fridge and freezes well.
Salting before washing
Salt added while there is still buttermilk and wash water in the butter dissolves into that liquid and then gets rinsed straight out. You end up with butter that tastes unevenly seasoned or barely salted at all, and you cannot easily judge how much to add to correct it.
Do this instead: Wash and work the butter completely first, then knead the salt in at the very end, tasting as you go. About 1/4 teaspoon of fine salt per pint of cream is a good start.
How to Store It
Wrapped tightly in parchment or in an airtight container, well washed butter keeps for two to three weeks in the fridge, and salted lasts a little longer than unsalted since salt inhibits spoilage. If you skipped the washing or rushed it, plan on about a week instead. Butter also absorbs smells readily, so keep it away from anything strongly scented.
It freezes exceptionally well. Wrap it tightly, and it will keep for up to six months with no change in texture once thawed. Freezing it in small logs or portions is easier than freezing one large block you then have to hack apart.
The short version
Use heavy cream, not milk. Bring a pint to about 55 to 60F, then churn it past whipped cream and past the grainy stage until it breaks into yellow granules and thin buttermilk, about 5 to 10 minutes. Strain, keeping the buttermilk. Knead the butter under ice water until the water runs clear, work out the remaining water, then salt to taste. Roughly 8 ounces of butter from a pint of cream.
It is worth doing once simply to see it happen, and most people who try it keep doing it for the compound butter rather than the plain. A log of herb or garlic butter in the freezer is one of the most useful things you can have for weeknight cooking.
For places to use it, our garlic butter linguine and garlic butter chicken thighs both lean on butter heavily enough to notice the difference, and there is more in our kitchen guides.
Frequently Asked Questions
Can you make butter from milk?+
Not directly. Butter is made from cream, which is the fat that separates out of whole milk. Whole milk is only around 3.5 percent fat, and there is simply not enough of it to clump together into butter no matter how long you churn. You need heavy cream at roughly 36 percent fat or higher. If you have non-homogenised or raw milk you can let it sit for a day, skim the cream layer off the top, and churn that.
How much butter does a pint of cream make?+
One pint of heavy cream, about 2 cups, makes roughly 7 to 8 ounces of butter, which is close to two standard sticks. You also get around a cup of real buttermilk as a by-product. The exact yield depends on the fat content of your cream, so a richer double cream gives noticeably more butter than a lighter whipping cream.
Why do you have to wash homemade butter?+
Because any buttermilk trapped in the butter will spoil, and it spoils much faster than the butterfat around it. Washing means kneading the butter under cold water until the water runs clear rather than cloudy, which rinses out those milk solids. Unwashed butter turns sour within about a week, while properly washed butter keeps for two to three weeks in the fridge.
What temperature should the cream be?+
Around 55 to 60F, which is cool but not fridge cold. Take the cream out about 30 minutes before you start. Cream straight from the fridge takes far longer to break and the fat stays stubbornly firm, while cream that has warmed to true room temperature produces soft, greasy butter that is difficult to wash and work.
How long does homemade butter last?+
Properly washed and salted butter keeps for two to three weeks in the fridge, and unsalted a little less. If it has not been washed thoroughly, expect about a week before it starts tasting sour. For longer storage, wrap it tightly and freeze it for up to six months, since butter freezes extremely well with no loss of texture.
What can you do with the leftover buttermilk?+
Use it. This is real buttermilk, sweeter and thinner than the cultured buttermilk sold in cartons, and it is excellent in pancakes, waffles, biscuits, scones, and cornbread, or as the liquid for marinating chicken before frying. It keeps for about a week in the fridge and freezes well. Pouring it away is the most common waste in the whole process.