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How to Make Whey Caramel

Breads & Desserts

Use an abundance of whey to make this delicious whey caramel sauce, made quite easily at home with just a few simple ingredients!

Use an abundance of whey to make this delicious whey caramel sauce, made quite easily at home with just a few simple ingredients!

For anyone who has made their own homemade yogurt, fresh, soft cheese or even ricotta cheese, you probably know that the process results in a lot of whey.

If you are using a full gallon of raw milk to make yogurt or fresh homemade cheese, then you’ll have at least half of the milk separate into whey.  

Whey lasts about 2 weeks in the fridge. The best part about having these jars of whey is that you can use for a lot of things. 

Use as a marinade, in your skin care, soaking beans or soaking grains.  Though I typically use it to rinse my hair every few days, it has been working wonderful on my acid-loving plants in the garden.

But since that requires so little whey, I usually have quite a bit left. One of my favorite ways to use it is to make this delicious whey caramel. Yum!

What is Whey?

Whey is the byproduct when you strain your homemade yogurt or make homemade cheese. Making fresh cheese with lemon juice or vinegar results in acidic whey, which has quite a few uses around the house (as a marinade, soaking beans and even fermentation), garden and even in your beauty routine.

Whey contains milk sugar, some minerals, and a little protein. 

It contains glycolmacropeptide, which helps lower your appetite by promoting the secretion of hormone cholecystokinin – which means it helps you stay fuller, longer, without eating all too much.

Use an abundance of whey to make this delicious whey caramel sauce, made quite easily at home with just a few simple ingredients!

If you have access to raw milk, then you can use that gallon to make your own homemade cheese or yogurt, then turn around and make ricotta, and then also use the leftover whey to make caramel sauce.

You didn’t know you could get so many uses from a gallon of raw milk – did you? ☺️

How to Make Whey Caramel

Using whey to make caramel is a fairly simple but lengthy process. All of the lactose (sugar that gives milk its sweet taste) is contained in the whey. When you cook the whey for several hours, the whey takes on a caramel flavor.

You can caramelize whey by cooking on low heat for several hours, all while stirring frequently, but the high concentration of lactose will result in a grainy whey caramel.  To help battle this we add sugar as we cook the whey down – which prevents the whey caramel from becoming grainy.

If you are making caramel from sweet whey, it’s best to add a little lemon juice to prevent the sugar from crystalizing as the water evaporates.  If you are using acidic whey, you shouldn’t have a problem — using whey and sugar alone will yield a fantastic result without any more acid added.

Use an abundance of whey to make this delicious whey caramel sauce, made quite easily at home with just a few simple ingredients!

Use an abundance of whey to make this delicious whey caramel sauce, made quite easily at home with just a few simple ingredients!

Start by adding your whey to a stockpot and simmering on low/medium for around an hour until it is reduced by almost half.

Then add the sugar and the butter, and stir frequently on low/medium until dissolved.  Turn the heat up ever so slightly to medium, and keep a close eye as it starts a low boil.

I kept mine at medium, and it took around 45 minutes to get to this point – don’t walk off too far. It’s best to tackle things in the kitchen while you wait than allow it to scorch the pan.

 Use an abundance of whey to make this delicious whey caramel sauce, made quite easily at home with just a few simple ingredients!

Over time, the mixture will slowly become darker and thicker – as it thickens it will start to foam, but by stirring constantly during this stage you can keep it from foaming over the pot.

Be cautious – because it thickens so quickly and if you aren’t watching you will risk burning the caramel.

Use an abundance of whey to make this delicious whey caramel sauce, made quite easily at home with just a few simple ingredients!

This whey caramel results in a lighter version of the thicker dulce de lech that you could use and drizzle on ice cream, drizzled on desserts or even pancakes, or gifted to neighbors for the holidays.

Refrigerate the caramel and use within 2 weeks. Once refrigerated, it will harden up – simply reheat to enjoy as pictured above.

Print Pin
4.16 from 13 votes

Whey Caramel

Transform whey from cheese or yogurt making into a delicious, whey caramel that's perfect for drizzling on desserts, pancakes or even ice cream.
Cook Time 2 hours 30 minutes
Total Time 2 hours 30 minutes
Servings 1 1/2 C.
Author Sheryl

Ingredients

  • 2 quarts sweet or acidic whey
  • 1 1/2 C. organic cane sugar
  • 1 vanilla bean seeds only
  • 4 oz butter
  • 1/4 C. lemon juice* only if using sweet whey

Instructions

  • Add whey to a heavy stockpot on low/medium heat and simmer down at least 1/2 over the course of an hour. (Low and slow is better than risking it by scorching the pan on too high of a temp).
  • Once reduced, add the sugar, vanilla bean seeds, butter, and lemon juice (if using sweet whey). Stir occasionally on low/medium until well combined, then slowly raise the heat to medium.
  • Stir frequently, as over the next 30-45 minutes the whey will slowly start to caramelize and reduce to a syrupy consistency. Be patient because it can scorch if left unattended.
  • The whey will slowly change colors and become more brown, then start to foam - continue to stir more often as it caramelizes incredibly quickly. Once it thickens to the point that it coats the back of a spoon, remove from the heat and stir as it cools.
  • The whey caramel will thicken considerably as it cools.

Notes

Make sure you use fresh whey, not whey from powder as sold in stores.
Cover and refrigerate whey once cooled. Store in the refrigerator for up to 2 months.

 

 

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Comments

  1. Alice Dean says

    December 15, 2019 at 6:28 am

    I collect whey as I make yogurt and have been saving it up refrigerated until I had enough to use. When you say “fresh whey” does that mean not refrigerated over 2-3 months?

    Reply
    • Sheryl says

      December 16, 2019 at 11:06 am

      Alice, you can definitely use that whey without an issue. Just keep an eye on it as it simmers down – it’ll take a few hours to reduce, but once it gets to a certain point don’t wander off too far and forget it’s on the stove. I save up my whey every week and make this caramel when I have a significant amount of whey collected. It is so good!

      Reply
  2. Amy says

    March 1, 2020 at 1:57 pm

    We are sugar free. I am currently on a camdida cleanse so even natural sugars are out. Would I be able to use stevia or swerve in place of cane sugar, do you think?

    Reply
    • Sheryl says

      March 1, 2020 at 10:45 pm

      Amy, you can definitely try. I haven’t tried personally but it should work out ok πŸ™‚

      Reply
    • Herbwifemama says

      October 26, 2020 at 9:54 am

      No, stevia or swerve will not caramelize.

      Reply
    • Rosie Gagnon says

      January 7, 2022 at 11:27 am

      5 stars
      I used liquid sucralose instead of sugar, a little butter and vanilla is all, i just cooked mine a little longer. Kept stirring till I got to fudge consistency,it hardened up once cool into candy which is awesome, high protien!

      Reply
  3. Diane Redcay says

    March 14, 2020 at 3:36 pm

    What does sweet or acidic whey mean? Can you can it for longer storage?

    Reply
    • Sheryl says

      March 17, 2020 at 11:50 pm

      Sweet whey is a byproduct of rennet-based hard cheeses while acidic whey is the byproduct of cottage cheese, yogurt, etc. I haven’t tried canning this for longer storage!

      Reply
      • Ellen A Wadsworth says

        March 1, 2021 at 9:38 am

        I have successfully canned it! I used a water bath for 1 hour and made sure the water didn’t get hotter than 160 degF. The butter separates out but that might be because I didn’t cook it long enough in the pot for it to thicken like molasses.

        Reply
  4. Mary says

    March 30, 2020 at 4:55 pm

    5 stars
    I now know what to do with all my leftover whey!! Super tasty!!

    Reply
    • Sheryl says

      April 1, 2020 at 1:42 am

      Yes!!! It’s so good as well! It’s my favorite way to use leftover whey after yogurt!

      Reply
  5. Jessica says

    April 5, 2020 at 10:25 pm

    Is there something else I can replace the vanilla bean with? I don’t have that.

    Reply
    • Sheryl says

      April 6, 2020 at 10:43 pm

      Jessica, you can skip it altogether. Sometimes I add a tsp or two of vanilla extract as it simmers down (same time I add the sugar/butter).

      Reply
  6. Carla says

    May 24, 2020 at 5:29 pm

    5 stars
    I’m making this right now!! Gave it 5 stars already because ALL your recipes are amazing so I know this one will be too!!

    Reply
    • Sheryl says

      May 25, 2020 at 8:57 am

      You are so funny Carla. So glad you love that caramel. I like it too! πŸ™‚

      Reply
  7. Salky says

    June 7, 2020 at 9:19 am

    I ended up with about 2 cups. I used whey from yogurt so added lemon juice. The caramel has a pretty strong lemon flavor. Can I leave it out? I will eat it but my husband may not. It took 3 hours. 1 1/2 hours to cook down each time.

    Reply
    • Sheryl says

      June 7, 2020 at 10:37 pm

      Yes, you can leave the lemon juice out. I don’t put it in mine because it makes it too strong. My kids eat the caramel on top of their yogurt and ice cream.

      Reply
  8. Alison says

    June 7, 2020 at 11:05 pm

    We are getting a lot of whey right now and I wondered if I can can this in small jars? Have you tried pressure canning the caramel? Can’t wait to try it!

    Reply
    • Sheryl says

      June 8, 2020 at 10:17 am

      I haven’t tried pressure canning it at all! I had so much whey for a while.. my kids eat yogurt like crazy. Back at the holidays I would save the whey and make one huge batch of whey caramel with a little vanilla extract and give as gifts to neighbors/friends. I am not sure about pressure canning it though.. you would prob want to check with Ball canning and see what they think.

      My kids use this caramel on ice cream, and over the top of their yogurt.

      Reply
      • Ellen A Wadsworth says

        March 1, 2021 at 9:41 am

        5 stars
        I tried pressure canning and it burned…got too hot. See my comments about water bath canning. I have been successful with it.

        Reply
  9. Inci Toral Manson says

    June 13, 2020 at 3:16 am

    5 stars
    Geat idea. Just wanted add in here that you can use your whey to keep your fresh cheeses longer and tastier, such as feta, mozzerella, ricotta and halloumi. Put your cheese in a deep container and add whey to the container enough to cover your cheese. Close the container with its lid and place it into your fidge. You can keep your cheeses about a week with the same whey, after that replace the whey with a new batch. The cheeses will keep their form (hardiness or softness) and get even tastier. Keep them this way by renewing the way until they are finished. This process will also reduced the amount of salt in the cheese, so if you prefer to keep the salt, add a couple of tsp fulls of salt into the container.

    Reply
    • Sheryl says

      June 15, 2020 at 6:05 am

      You sure can! I use it to keep my mozzarella fresh too!

      Reply
  10. Linda says

    November 20, 2020 at 2:36 pm

    Looking forward to trying this recipe. Since this is a slow process has anyone used a crock pot? If possible?

    Reply
    • Sheryl says

      November 21, 2020 at 8:27 am

      Linda, I haven’t tried… might be worth a shot though. Let me know if you try… I might give it a whirl this week and report back to let you know how it goes.

      Reply
      • Rachael says

        December 5, 2020 at 7:32 pm

        Just saw this comment… any chance you tried the crockpot method?

        Reply
        • Sheryl says

          December 6, 2020 at 8:31 am

          I did and it didn’t turn out quite the same. It took forever… and so I’m convinced it’s not for me! The stove top does take a while to simmer down but I usually do it on a weekend when I’m going to be home cleaning the house. I don’t know, maybe I don’t have a good crock pot?

          Reply
          • Rachael says

            January 12, 2021 at 3:25 pm

            I’ve tried your recipe 2x now and both times it took over 3 hours to boil down to what I’d say is half, and then another 2+ hours to caramelize. The 2nd time I used a candy thermometer to try to get it to soft ball stage to make candies, wouldn’t get there. I’m not sure I have the time to try again. Standing at the stove for 5+ hrs isn’t with it, no matter how excited I was to make this work.

          • Sheryl says

            January 13, 2021 at 11:10 am

            Sorry it didn’t work for you. I usually simmer mine down when I’m home all afternoon one day, that way I’m not spending too much time on one thing.

          • Natalie says

            May 24, 2021 at 9:23 pm

            Hi, I just found this recipe and I’m really excited to try it! With 2 small kids and a bad back, being stove-side for that long isn’t going to work for me, BUT I was thinking that I could reduce the whey in my slow cooker, then do the rest on the stove. My mom makes Greek yogurt too, and loves to cook, so I’m thinking that she and I can take “shifts” at the stove when I’m visiting one day. I’ll let you know how it turns out using this hybrid method. πŸ™‚

          • Sheryl says

            May 26, 2021 at 12:12 am

            Let me know how it works for you, Natalie. It does take a while to simmer on the stove. I haven’t tried the slow cooker, but when I use the stove, I keep it on low and basically do things around the house (I have to do it on a day I’ll be home obviously). Once it simmers down to less than half, I have to stay closer to it because it turns rather quick at that point. Let me know when you try this hybrid method and if it works!

  11. Glenda says

    January 10, 2021 at 4:07 pm

    I only have two cups of whey left from making yogurt. How much sugar and butter do I use to make caramel sauce?

    Reply
    • Sheryl says

      January 13, 2021 at 11:11 am

      Hi Glenda, I would save the whey until you have at least double that — if you aren’t up for that, then I would suggest 1/4 C of each, brown sugar and butter.

      Reply
  12. Mara says

    February 14, 2021 at 7:40 pm

    I have to say, I was skeptical. I waited to make this until a day when I felt brave enough to fail but alas – success! I made it with whey leftover from making Greek yogurt which apparently is pretty acidic because the final product is pretty tangy but I like it and I can imagine I will make this again!

    Reply
    • Sheryl says

      February 16, 2021 at 2:13 pm

      I’m so glad, Mara! I make it every time I make yogurt. If I don’t feel like making it with a small batch of whey, then I’ll refrigerate my whey until I have quite a bit and make one large batch and share with my neighbors.

      Reply
  13. Megan Lloyd says

    February 27, 2021 at 6:07 am

    I apparently went to far because I ended up making hard caramel that I put in jars that I have no idea how to get out. Oh, and whatever you do, don’t swipe the back of a spoon with your finger to test the viscosity of the molten sugar like you would with testing ice cream base…you will end up with a pretty nasty 2nd degree burn…not that I’m speaking from experience or anything πŸ˜’

    Reply
    • Sheryl says

      March 1, 2021 at 9:28 am

      Oh I know.. I have done that too. I have done whey caramel so much, it hasn’t always worked though. You don’t necessarily see my failures on here — just my success. One time I got distracted with the kids and let it boil too far and it got hard in the pot and ruined my pot. And I had to toss it. I have (like you) burned my finger, forgetting how hot it was wanting to try a taste in my mouth. So I’m with you on your experience! I hope you feel better, Megan!

      Reply
  14. Sienna says

    April 12, 2021 at 11:41 am

    5 stars
    This is SO good! I feel like it took me twice the amount of time.. maybe I did something wrong? Also it’s very lemony.. is this just because my whey sat longer? I always let my yogurt sit a little longer for a tangier flavor and I strain for a full 24 hrs. Could I do away with the lemon? Or is it necessary?

    Reply
  15. Clare says

    April 24, 2021 at 9:05 am

    5 stars
    Hi
    I have been trying to use up gallons of whey.
    Have made Brunost.. it is a chore to eat! Made ricotta and was delighted.. also caramelised the last bit. It boiled like fudge.. may never get it out of jar.. could one make toffees.. a bit salty and a bit sweet!!
    Thanks, so glad to find your site
    Clare

    Reply
    • Sheryl says

      April 30, 2021 at 12:01 am

      You sound like you have been busy! I haven’t ever made Brunost, but I have heard of it. I love having too much whey. What I started doing was freezing it in ice cubes and using it to make cold process soap. The sugars in the whey make for a lovely bar that lathers well. I had so much at one point.. I remember stressing out trying to use it all. I love caramel (kids too) but I need to try to make Brunost. I have seen it and it looks every bit of delicious!

      Reply
  16. Valerie says

    June 16, 2021 at 4:37 pm

    How do you know if your way is sweet or acidic? I made some yogurt out of goat cheese and added Ranett to it. With the way the suite? When I make farmers cheese I add lemon juice which I know that would be acidic. But if you use rent it does that still make the Whey sweet?

    Reply
    • Sheryl says

      June 26, 2021 at 11:49 pm

      Valerie – sweet whey is the result of rennet; while acid whey is the result of acid-coagulated cheese (ie. vinegar, or lemon juice). I hope that helps.

      Reply
  17. John says

    February 15, 2022 at 10:25 pm

    Reading through your account of making caramel from leftover whey, I’m intrigued and would like to have a try. But can you confirm the yield? The recipe says 1/2 gallon of whey reduced by half plus a quarter pound of butter and the 1-1/2 cups sugar makes only 1-1/2 cups of caramel. I would think it would be more like a quart of caramel. Am I right?

    As an aside, I also use my leftover yogurt whey in place of chicken stock in sauces and soups, and in bread making to substitute for milk, buttermilk and water. Taste the whey to judge its acidity, and if very tart, for instance, use it to build out flavors found in sauces that use ingredients like makrut lime leaves and lemongrass common to SE Asian cuisines. Or make sodabread without the buttermilk.

    Reply
    • Sheryl says

      February 22, 2022 at 10:17 am

      You are right – it makes just about 1.5 cups, sometimes a tiny bit more. I don’t always make caramel with it (that would be dangerous for my diet!) — I sometimes use it for baking pancakes, sub buttermilk in banana bread, for marinading meat, in place of stock (just like you do!), and then other times it goes straight in my garden as some plants thrive on it (when diluted of course!) For me it is just knowing that I have one other option to use it especially at the holidays when I give gifts to random people for doing work on my house, people at church, etc.

      Reply

Trackbacks

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Hi, I'm Sheryl!

Hi there, I'm Sheryl!

Rebooted Mom was created out of my own journey to live and think differently about the food I eat. I share everything from gardening to DIY, recipes, and sustainable living.

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