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Cured egg yolks have all the richness of fine cheese, along with a salty tang that comes from the curing process. They’re equally at home finely grated on top of pasta or topping a tasty dessert.
Salt cured egg yolks are preserved with salt, obviously, but that’s not the end of the story.
What if I told you that there was a tiny creature at work inside these tasty orbs of flavor. The same tiny creature that’s responsible for salami, sauerkraut, and yogurt?
No, you say? Too good to be true? That’s like saying bacon, ham, and sausage all come from the same “magical” animal. It’s just not possible.
And yet, here we are, with perfectly preserved pro-biotic egg yolks for the tasting.
A high salt environment inhibits certain spoiling bacteria, which allows other desirable cultures to dominate.
It’s not that salt prevents anything from living in the yolks, it’s just that it slows the growth of some types of bacteria until the others can take over and release lactic acid. It’s the lactic acid that actually preserves the food, and the salt just facilitated the whole thing.
Good work Lactobacillus!
The whole adventure starts with egg yolks nestled into tiny cradles of salt. Pour about 1/2 inch of salt into a nonreactive container, like a glass or stoneware baking dish.
Use the back of a spoon to make little indentations for the egg yolks, and then carefully separate the eggs. Be sure that the yolk isn’t punctured, or it’ll just run everywhere into the salt.
Carefully set each yolk in its salt divot.
Once your platter is full of egg yolks, it’s time to completely cover the yolks. Add more salt until the yolks are completely covered.
They should be totally invisible, covered by at least 1/4 inch of salt on top. All you should see is tiny bumps in the salt where once you could see the bright yellow of egg yolks.
The egg yolks will lie in wait beneath the salt, slowly curing, for about a week.
They should be kept cold during this process, to keep things cultured slow. Place the whole tray in the fridge and forget about it until next week.
Once the salt cure time is up, dig each egg yolk out of the salt. They’ll be firm enough to remove by hand, but still a bit tacky because they haven’t been dried yet.
The next step is to air dry the salt-cured yolks.
I’ve seen recipes that try to speed up the process by placing the yolks in a 200-degree oven for about an hour. That does indeed dry them out, but that’s like saying you can speed up the curing process on prosciutto by sticking it in the microwave.
It just seems wrong to me, to spend all that time trying to cultivate a living food full of flavor, and then take a shortcut right at the end.
You’ve already had them curing for a week in salt, surely you’re patient enough to see the whole process through?
Dust any extra salt off the yolks, using a damp towel if necessary.
Place them on a length of cheesecloth, and then wrap the cheesecloth around them like a burrito. The yolks should stay separated to ensure good airflow and allow for even drying.
Lacking cheesecloth, any clean scrap of cloth will work. Things like a section of an old (but clean) cotton t-shirt, bed sheet or thin flour sack towel. Just nothing too heavy that’ll prevent airflow.
Tieing a bit of butchers twine at intervals between the yolks will keep them separate, while at the same time holding the cheesecloth firmly around the yolks.
The whole thing will look a bit like a string of caramel candies. Each yolk tucked into its own little chamber, all in one neat string.
At this point, it’s time to air dry the egg yolks.
Hang the string somewhere cool for 7 to 10 days to allow the yolks to air dry. The fridge is a good spot, or a cool dark back closet.
Ideally, it’d be below 50 degrees.
If you’ve ever made any salt-cured meats, this whole process is looking pretty familiar. It’s was the just about the exact same process when we made duck breast prosciutto and guanciale (cured pork jowl).
The seasoning is a bit different and the cure times are different, but all the steps are the same. Once you’ve done one salt cure, it’s just the beginning.
Think of salt-cured egg yolks as a bit of gateway charcuterie.
At the end of the drying process, the yolks should be firm but not rock hard.
If you allow them to dry too long they’ll be tough like egg yolk jerky, which is still edible, but it’s much harder to grate.
We use a small micro plane to grate tiny bits of the salt-cured egg yolks for use on foods.
At this point, you have a rich, salty, tangy topping that can be used just about anywhere. Many people consider it a great dairy-free Parmesan cheese substitute, but it’s very versatile.
Chefs are grating it on top of desserts for an exotic touch, and salty sweet is downright delicious, especially mixed in with the richness of the yolks.
Salt Cured Egg Yolk Variations
Beyond simply curing egg yolks in salt, there are a couple of minor tweaks you can make to the process for slightly different results.
Sugar Cured Egg Yolks
In the cure, you have the option to use all salt, or change it up and use half salt and half sugar.
The sweet and salty cure creates a distinctly different result, and that one is even more suited to use in a dessert.
I like the idea of putting a bit of the salt/sugar version as a salad topping too.
Partially Cured Egg Yolks (soft cured)
Curing egg yolks isn’t an all or nothing prospect. Sure, if you want them to keep for any length of time you’ll need to cure them for a week and then air dry them, but preservation isn’t always the primary goal.
I’ve also seen partially dried egg yolk cures used in a different way.
They’re only barely cured, and the lactic acid bacteria haven’t really gone to work yet, but I thought it was novel none the less. If you place the fresh yolks in a salt cure and then allow them to cure for a mere 16 to 24 hours.
At this point, they’re used without any drying time, they’ll be firm but still spreadable. That makes an interesting addition to a charcuterie plate, for dipping or spreading, but those “soft cured egg yolks” aren’t fully cured preserved eggs.
Salt Cured Egg Yolks
Ingredients
- 12 egg yolks
- salt, kosher or canning
- cheesecloth
Instructions
- Place a 1/2 inch thick layer of salt in the bottom of a non-reactive container such as a glass baking pan or Tupperware.
- Use the back of a spoon to create divots for each egg yolk. They can be relatively close together, but the egg yolks should be at least 1/4 inch apart at the sides.
- Separate eggs, being careful not to puncture the yolk. Remove as much egg white as possible and place the yolks in the divots.
- Cover the eggs completely with salt so that you can no longer see any yellow.
- Place the salt covered yolks in the refrigerator to cure for 1 week.
- Remove the yolks, dust off the salt and wrap the yolks in cheesecloth.
- Hang the yolks to dry, in the refrigerator or in a cool dark place (under 50 degrees). Dry for 7 to 10 days.
- Once the yolks are firm and easy to grate, store them tightly covered in the refrigerator.
Notes
- Be sure to use either kosher salt or canning salt. Table salt has anti-caking agents and additives.
- This recipe can also be made with a cure composed of half salt and half sugar.
- Salt Cured Egg Yolks should keep for at least 3-4 weeks (refrigerated), if not much longer. Keep the container tightly sealed so that they don’t dry out further.
- Adjust the recipe to however many egg yolks you’d like to make. You can make just 1 or 2 in a very small container.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Egg Preservation Techniques
Looking for more ways to preserve eggs?
- 30+ Ways to Preserve Eggs
- Preserving Eggs in Lime (Keeps 12+ Months)
- How to Make Pickled Eggs
- Easy Pickled Quail Eggs
Food Preservation Techniques
Salt cures aren’t the only way to preserve food at home…
- Beginner’s Guide to Water Bath Canning
- Beginner’s Guide to Pressure Canning
- Beginner’s Guide to Lacto-Fermentation
- 100+ Dehydrator Recipes
Do they have to be stored in the fridge?
Yes, they need to be refrigerated.
How long do they last unrefrigerated?
If left out, they will continue to dehydrate and will be very tough. You really want to keep them in the refrigerator in a tightly sealed container once they’re fully cured.
This is fantastic thank you! Love the air dry style too. Do you have any ideas what to do with the egg whites? I’d love to preserve them as well in some way! Thanks!
You could freeze them and then use them for egg white recipes.
Of course! Thank you!
You’re very welcome.
A sushi bar in my hood serves cured egg with ikura over sushi rice. SUPER healthy! The egg is soft and spradable but tastes sour…maybe its a cured but not dried egg? It looks like a golden drop or a giant gold fish egg. Its semi transparent like a magical orb. I will try to make my own, spreadable and grateable, but dont think it will compare to Tuna Kauhuna’s cured egg.
Thanks!
I was eager to make these when I separated eggs last week and used the whites for an oil-free granola. In my excitement, I did not reread the directions and left the dish with the salt-buried egg yolks out on the counter instead of putting in the fridge. I just now reread the article to remember the second step, air-drying. I dug the yolks out of the salt, and they look OK. Is there any problem in continuing the process from this point?
What did you end up doing with your eggs?
I made these but somehow missed the step of putting them in the refrigerator. I’ve been making so many ferments I just was used to leaving things out I suppose. What I would like to know is if I can still use these egg yolks since they have been curing unrefrigerated for 5 days now. I don’t know if it makes a difference, but they are Amish farmed eggs. Thank you kindly for your prompt response.
I’m just now seeing your question. What did you decide to do with the eggs?
I didn’t know you can do this with only the yolk. This is really cool.
Thanks for sharing this Ashley. I didn’t even know I could do this just like with meats.
I can’t wait to get mine going.
You’re very welcome. I hope you enjoy it.
Frankie the host of struggle meals did a version of this using salt and sugar with no drying time involved. It’s in his risotto recipe
Sounds very interesting. Thanks for sharing.
Amazing! This is actually a nice piece of writing, I have got much clarity on this topic from your piece of writing.
Thank you. So glad you enjoyed it.
Absolutely horrendous article, based on personal opinion rather than citation.
Refrigerate to prevent microbe growth? They’re buried in salt….
Baking the yolks to dry them? No, it’s called flavour development….
Study more, write less
The purpose of placing them in the fridge is to make for a nice slow curing process. Although you may not see a ton of citations in the article, there is a great deal of research and testing that goes into each recipe and post. With that said, we don’t know everything and are here to learn. Feel free to share any additional knowledge that you have.
Credit to you for answering douche bag Cody with class and great recipe, thank you!
She actually said not to bake them. Read more, criticize less.
I made these for the first time. Honestly, all I can taste is salt – these are far too salty for me, it’s like finely grating salt over food. Many other recipes online use a mixture of salt and sugar so next time I might try that. The yolks looked great and I accidentally broke one raw yolk and it worked fine too.
I’m sorry that you didn’t like the taste. Let us know how the salt and sugar mixture works for you.
I just tried 4 goose egg yolks in 4 different flavors: plain salt, 50:50 sugar and salt, Chinese 5 spice and salt, and ghost pepper flavored salt. Just started the air dry portion – so I’ll report next week on the flavor profiles.
Awesome, I’m excited to hear how it goes!
Would these work for Chinese mooncakes do you think or would they be too salty? Mooncakes are a pastry shell wrapped around some variety of sweet filling with a preserved yolk in the middle.
They are really salty, and I can’t imagine eating one whole. I actually looked this up now that you mention it, and it seems that for moon cakes they use the yolk from a salted duck egg, where the whole egg (in shell) has been stored in a salt brine. Here’s a tutorial: https://thewoksoflife.com/salted-duck-eggs/
can i use iodized salt for this?
You do not want to use iodized salt in this recipe as it has anti-caking ingredients and additives.
What will happen if i did’t put it in the fridge ?
They will not cure as slowly as they need to.
1. Just thinking but re-using salt should not be an issue if any remaining egg bits are removed before placing in a 350 deg oven for at least 20 minutes.
2. I think i’m going to use smoked salt for a batch. should add an interesting twist.
Good ideas!
Do you hang the yolks in the fridge to air cure? Or just somewhere that it is under 50 degrees?
You can hang them anywhere as long as it is dark and under 50 degrees.
Would a cracked and runny yolk work just as well as the whole yolk?? May or may not have cracked a few… asking for a friend… haha
haha, you can tell your friend that I’m not really sure. I believe the salt would permeate the yolk if it were broken.