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Home Condiments and Sauces

Korean Green Plum Extract or Syrup (매실청 Maesil Cheong)

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Posted:4/04/2022107 Comments
Recipe Print
Korean Green Plum Syrup (Maesil Chung 매실청)
Korean Green Plum Syrup (Maesil Chung 매실청)

Korean Plum Extract – 매실 엑기스(Maesil  Aekgiss) or 매실청 (Maseil Chung) or Green Plum Syrup – has only appeared in Korean cooking in recent years while Korean green plums (매실 Maesil, also: Chinese plum or Japanese ume) have been around for a long time. Records of its medicinal purposes go far back as 200 AD. But If you watch any Korean cooking shows or look up recipes on the internet these days, the syrup is used just about everywhere. In fact, it’s used a little too much in my opinion but that’s just me.. 🙂

The two terms, Aekgiss (엑기스)  and Cheong (청) are used interchangeably to describe green plum extract or syrup. The word  “Aekiss” comes from Japanese and it was their take on the word “extract”.  Don’t ask me how you get “aekiss” from “extract”.. 🙂 On a side note, it IS amazing how languages change in different cultures..I’m constantly reminded not to pronounce English words correctly in Korea because people never understand what I say. For example, if I say “Food” almost no one will understand whereas if I say “Pood”.. then everyone knows it!

The word Cheong actually means a type of syrup that’s made by either physically or chemically changing certain grains without any added sugar.  For example, Brown Rice Syrup (called 조청 Cho Cheong) is made from culturing cooked rice with enzymes with no additional sugar.  So if you think about it, neither of these terms are fully accurate..

While I was living in the US, I resisted using this Korean plum extract in my recipes. It’s not something I grew up eating and therefore I did not feel it was authentic.  Also, the Maesil Cheong is not a very readily available ingredient for many people outside of Korea, so I hesitated using them in my Kimchimari recipes. BTW, if you can’t get any plum syrup, no worries, just use plain ol’ sugar or rice syrup instead.

Now that I’m living in Korea, I’m finding that I just can not ignore Maesil Cheong anymore. It is such an integral part of Korean cooking that both my mother and mother-in-law (who is usually very traditional) now make maesil chung every year! In addition to being a great fragrant sweetener in cooking, Maesil also has many health benefits. Probably why it’s become so popular in Korea because Koreans just LOVE anything that is known to be healthy.

Japanese Green Plum or Maesil Tree
Japanese Green Plum or Maesil Tree
Japanese Green Apricot Plums or Maesil
Japanese Green Apricot Plums or Maesil

This May, I found these wonderful plum trees in our farm and after having tried it for a year, I just could not pass up the chance to make the maesil cheong green plum extract syrup myself!

How to use Korean Plum Extract or Maesil Cheong

Before we talk about how to make Korean Plum extract (Maesil Cheong), I want to share how I use it in my own home.

  • Make hot or cold maesil drink – from my personal experience. drinking plum syrup + water definitely helps with indigestion especially after a large meal so it’s definitely a great dessert drink. You can serve it cold or hot, both taste and feels great. One thing though, if you have an acidic stomach, you might want to be a bit careful.
  • I use Maesil Cheong in addition to sugar in many dishes – because Korean green plum extract is sour and sweet, I don’t substitute sugar fully but I substitute a little sugar with maesil or just add a splash in addition. It usually enhances the flavor of any dish when you add just a splash. Here are some dishes I always add to (I just don’t usually have it listed in many of my recipes because I didn’t want to make everyone to buy it or use it).
    • Bulgogi or Kalbi marinade
    • Kimchi – even though I don’t say it in each recipe, I often add a splash in all my kimchi when I make it. It’s totally fine without it but it does add that little extra something when you do.
    • Fish Jorims – wow somehow I don’t have a recipe up for this but if you do make any, you can add a swirl
    • Salads – like Lettuce Salad or Cucumber Salad
    • Chogochujang Sauce

Ingredients

** 2 lbs of plums produce about 1 quart of syrup

  • 2 lbs Green Plums
  • 2 lbs sugar (white or organic unbleached)~ 2.4 lbs  sugar
  • 1 glass jar or breathable earthen ware (항아리 Haangari) large enough to hold both sugar and plum

Directions

  1.  Wash the plums and drain. Let the plums completely dry by leaving it for few hours in a colander or better yet, spread them out onto a baking pan or tray lined with paper towel.

    plums_washed and draining
    Maesil or Japanese green plums washed and draining
  2. While the plums are drying, remove any stems including the little stub near the stem. Removing the stub is not a must but if you don’t, stubs will later float around in the syrup and you will have to strain it to get rid of it.  Leaving the stubs intact also increases the chance of mold developing in the syrup.

    Cleaned maesil plums for syrup
    Cleaned plums maesil plums for maesil chung syrup
  3. Discard any plums that are rotten because these can spoil the syrup.
  4. Sanitize the glass jar by rinsing it with boiling water or alcohol.
  5. Layer sugar and plums alternately in the jar. This means you need to divide the sugar and the plums equally so that you don’t run out of sugar at the end. If you layer the sugar so that it just about covers the layer of plums, it should work out OK.
    Japanese green plums for maesil chung syrup
    Japanese green plums for maesil chung syrup
    Green apricot plums or Maesil in sugar for Maesil Chung
    Green apricot plums or Maesil in sugar for Maesil Chung
    Green plums or maesil with sugar in jar for maesil chung
    Green plums or maesil with sugar in jar for maesil chung

    And that’s it! Cover the jar and leave it in a cool place for 90 days and the syrup should be ready.

    Maesil Chung or Green Plum Syrup after Day 1
    Maesil Chung or Green Plum Syrup after Day 1

BUT WAIT!!! A bit more work is still needed..many (including me) have failed because they did not stir the syrup afterwards. See below – notice how the sugar has accumulated at the bottom of the jar. You need to stir the green plum syrup every 2 days or so (prob. for about 7-10 days) until the sugar is fully dissolved in the plum juice. You should still stir the plum syrup every now and then for the remaining 80 days.  Stir if you see the top plums take on a different color or if you see white stuff appearing on top.

Maesil Chung syrup or Green Plum Syrup on Day 3
Maesil Chung syrup or Green Plum Syrup on Day 3

After 90 days, remove the plums with the seeds – which now will have no flesh left and look all shriveled up. Store in jars at room temperature and it will keep for at least a year or more.

Maesil Syrup Substitute

If you can’t find Korean plum extract maesil syrup, just mix 1 Tbsp water + 1 tsp apple cider vinegar + 1/2 tsp sugar to substitute 4 tsp Maesil Syrup!

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4.84 from 6 votes

Maesil Cheong (Green Plum Syrup)

Korean Maesil Chung is a fermented syrup made from Green Apricot Plums and sugar. It adds great flavor to marinades, salads and just about any Korean dish that needs sweetness. Fresh green plums (aka Japanese green plums) are available only for a short time in the spring so don't miss it!
Prep: 15 minutes minutes
Total Time: 15 minutes minutes

Ingredients

  • 2 lbs Green Plums
  • 2 lbs sugar (white or organic unbleached)~ 2.4 lbs sugar
  • 1 glass jar or breathable earthen ware (항아리 Haangari) large enough to hold both sugar and plums
US Customary - Metric
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Instructions

  • Wash plums and drain. Let plums completely dry.
  • Remove any stems including the little stub near the stem. Removing the stub is not a must but if you don’t, stubs will later float around in the syrup and you will have to strain it to get rid of it.
  • Discard any plums that are rotten because these can spoil the syrup.
  • Sanitize the glass jar by rinsing it with boiling water or alcohol.
  • Layer sugar and plums alternately in the jar. This means you need to divide the sugar and the plums equally so that you don’t run out of sugar at the end. If you layer the sugar so that it just about covers the layer of plums, it should work out OK.
  • Cover the jar and leave it in a cool place for 90 days.
  • After 90 days, remove the plums with the seeds and store the syrup for use. Can be stored at room temperature for many months, even a year or more.

Tips & Notes:

  • Don’t hold back on the SUGAR! The key to making good plum syrup is the ratio of plum to sugar. The basic is 1:1 but depending on how big and juicy the plums are, you may want to increase the ratio to 1:2. More sugar increases the success rate since more sugar means less chance for mold to develop or turn sour instead of sweet.
  • What sugar to use? Brown vs White vs Organic? This is quite a dilemma…Using white sugar will intensify the plum fragrance in the syrup but we all know it’s not the best thing for your health. I used organic unbleached sugar here. Brown sugar contains molasses like substance in addition to sugar which can diminish the flavor and fragrance of the green plums.
  • You need to stir the syrup every 2 days or so (prob. for about 7-10 days) until the sugar is fully dissolved in the plum juice. You should still stir the plum syrup every now and then for the remaining 80 days. Stir if you see the top plums take on a different color or if you see white stuff appearing on top.
Author: JinJoo Lee
Course:seasoning
Cuisine:Korean
Keyword:drink, fermented syrup, sugar substitute, sweetener
KoreanCategory:Yangnyeom (양념)
Did You Make This?I love seeing what you’ve made! Tag me on Instagram at @Kimchimari or #kimchimari and don’t forget to leave a comment & rating below!

In addition, consider the following:

  • Don’t hold back on the SUGAR!!
    • The key to making good Korean plum extract syrup is the ratio of plum to sugar. The basic  is 1:1 but depending on how big and juicy the plums are, you may want to increase the ratio to 1:2. More sugar increases the success rate since more sugar means less chance for mold to develop or turn sour instead of sweet. A friend of mine used exact 1:1 ratio and failed on her first try. So I decided to increase the sugar amount to not quite 1:2 but something like 1:1.5..and SUCCESS!!
  • · What sugar to use? Brown vs White vs Organic?
    • This is quite a dilemma…Using white sugar will intensify the plum fragrance in the syrup but we all know it’s not the best thing for your health. I used organic unbleached sugar here.  Brown sugar contains molasses like substance in addition to sugar which can diminish the flavor and fragrance of the green plums.

History of Korean plums: The oldest record of these little plums is in Chinese medicine. Chinese smoked these on top of a fire and used it to relieve pain and also take care of intestinal problems.  Japanese used Ume Boshi to prevent rice from going bad in the summer.

In the last few years, studies have shown the following:

  • The large amount of citric acid in the plums help the body get rid of lactic acid therefore helping the body recover faster
  • The acidic plums help with secretion of saliva and digestive enzymes aiding with digestion
  • The plum syrup kills off harmful bacteria to help with diarrhea and promote normal bowel function
plum syrup after 30 days
Korean Maesil Chung or Green Plum Extract or Green Plum syrup after 30 days

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107 Comments
  1. MaryBeth says

    Posted on 10 October 2017 at 12:07 am

    Hi,
    You mentioned fungi and mold, but if mine did mold and I removed the top layer molded plums, is the rest still okay to use? What happened if there’s little white bubbles around the edge of the bottle after I removed the plums? I also removed the meat from the seed and tossed the meat back to the syrup, is that okay?

    Thanks so much sharing your experience and wisdom!

    Reply
    • JinJoo says

      Posted on 10 October 2017 at 9:53 am

      Hi MaryBeth,
      Yes, it should be OK if you removed the molded plums. The mold and the bubbles are both indications that you may not have enough sugar and/or that you have not been stirring it often enough. Sure, you can toss the meat back into the syrup. Try stirring it everyday and if it’s still bubbling too much, try adding a little extra sugar. Also taste it to see how it tastes. If there’s not enough sugar, it can start to turn into vinegar or alcohol.. 🙂 Good luck and thank you for asking!

      Reply
      • Stella says

        Posted on 10 October 2017 at 10:03 am

        Thank you so much for confirming the quality of the syrup and that it’s safe to consume. I’d be quite disappointed if I have to toss them. I drove 90 miles to an ume farm to pick them. They were beautiful. Next year I’ll have to pick more.

        Thank you again for your quick response and now I can enjoy them without worries! 🙂

        p.s. Have you ever thought of hosting a culinary tour of Korea? I think that would be so fun and delicious!

      • JinJoo says

        Posted on 10 October 2017 at 3:39 pm

        Yes, as long as the mold wasn’t excessive. I once had mold on my syrup one year and I am still living.. haha..hmm. culinary tour of Korea?? That would be fun!! If I were still living in Korea, I would! Thank you for the idea though!

      • Ju Hwan says

        Posted on 23 May 2019 at 8:05 am

        Hi jinjoo… what if t j.g e molded plums weren’t removed and just more sugar added. Will this ruin the maesil?

      • JinJoo says

        Posted on 23 May 2019 at 8:09 am

        Hm so are you saying you did not remove the molded plums but just added more sugar? It’s kind of hard to say.. if the mold is a small amount it may be OK but if there’s enough mold the syrup may end up tasting bad.

  2. Hyochong Jin says

    Posted on 9 October 2017 at 6:36 pm

    Hi, JinJoo! I’m a big fan. I’ve had so much success and fun with your recipes. I’m a little baffled by what’s going on with my maesil chung. It has been 3 months since I made my maesil chung but mine looks like yours did at 30 days. I’ve seen bubbles but no evidence of white/fungi. I keep the AC on all the time so maybe that’s what is slowing the process down? Hoping to hear your thoughts. Thanks!

    Reply
    • JinJoo says

      Posted on 9 October 2017 at 7:26 pm

      Hi Hyonchong!

      Thank you so much!! Always so happy to hear from someone who has actually cooked with my recipes and enjoyed them! You make me so happy. :))
      So..hmm..it sounds like not all the juice from the plums have come out? It sounds like perhaps you don’t have enough sugar. It’s all a matter of osmosis so if the sugar concentrate is not high enough to draw all the liquid out from the plums, it may decide to settle at a certain point. Do you still have sugar at the bottom? If so, you should stir it everyday until they are all dissolved. You can always add a bit more sugar to see if things are changing. You can also taste to see if you think it needs more sugar. At least, it’s not getting moldy so that’s good. Hope it helps, good luck!!

      Reply
      • Hyochong Jin says

        Posted on 10 October 2017 at 1:31 am

        Thanks for the tips! I will try adding more sugar. 🙂

  3. Margaret says

    Posted on 7 October 2017 at 10:01 am

    Hi, Jinjoo. I recently discovered plum syrup from a Korean friend who gave me some when she learned I had an upset stomach. I was amazed how well it worked. And tasted! I’m trying to make my own for the first time using unripe plums from a friend’s tree (not completely green, but definitely sour !). I’m on about my 14th day, and in the process of stirring I bruised some of the flesh of the plums. I’m wondering if this will cause any problems with the plum syrup?
    Thank you for your help!

    Reply
    • JinJoo says

      Posted on 7 October 2017 at 12:45 pm

      Hi Margaret,
      No worries! It’s totally fine if you bruise them or whatever. They will shrivel up totally in the end, just leaving the skin and the pit. Just keep stirring every couple days. Good luck!

      Reply
  4. Yoona says

    Posted on 8 December 2016 at 3:29 pm

    Hi JinJoo! Thanks for sharing this amazing recipe! I have a Maesil farm here in SoCal and it makes me really happy every time I find people sharing maesil recipes! I make this syrup every year and I’m patiently waiting for the batches I made this year 🙂 Also waiting for the next harvest season to make some more of this deliciousness!!

    Reply
    • JinJoo says

      Posted on 10 December 2016 at 7:57 am

      Hi Yoona! Oh – wow – I love farms! And I just love picking plums from the tree. And then of course, the maesil syrup, I love even more. Thank you so much for growing these beauties and for visiting my blog. All the best~

      Reply
  5. tiny.Voi says

    Posted on 27 June 2016 at 1:12 pm

    Hi Jin-joo, I’m wondering what specific brand of sugar that you used for this recipe? I’m lucky my local store has these green plums (I’m in IL, US by the way) so I would love to try this recipe. Here organic palm sugar and organic coconut sugar are kinda the most popular kind of organic sugar that I can find and their tastes are a bit different from regular white/brown sugar (especially the coconut sugar). If I want to stick with using organic sugar, can I use organic coconut sugar for these? Thanks 🙂

    Reply
    • JinJoo says

      Posted on 27 June 2016 at 2:09 pm

      I use organic unbleached sugar – no specific brands, the one I used this year is Kirkland’s. As far as using palm or coconut sugar, I’m not sure. I don’t see why it would not work since coconut sugar is still sugar but because coconut sugar has its own fragrance, I wonder if that may clash a little bit with the fragrance of plums. And usually, these fermented syrups are best done with unflavored, unscented pure sugars. Sorry, I can’t be of more help. Good luck and if you do decide to try coconut sugar, I would love to hear how it went – take care! Thanks for asking.

      Reply
      • tiny.Voi says

        Posted on 28 June 2016 at 8:32 am

        Thank you for replying promptly! I think with coconut sugar the taste would be really different, so maybe I will stick to sugar. I love this kind of syrup (my mom used to make apricot syrup and wild berry syrup like this and we drank them through the summer).

      • JinJoo says

        Posted on 28 June 2016 at 6:06 pm

        Yes, I think that is wise. I know I love drinking ice cold maesil drink in the summer and I’m sure apricot syrup and berry syrup is just as wonderful!

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