Home made yacon syrup

Yacon syrup

Yacon syrup

Yacon syrup is a sugar substitute native to the Andean region of South America. It is glucose-free, and does not increase blood sugar levels. Because of this, yacon syrup is often recommended as a sweetener to those suffering from diabetes or at risk of becoming diabetic.

The syrup is derived from the roots of the yacon plant, and according to some studies is a good source of antioxidants. The yacon plant tastes similar to jicama, but is biologically closer to the sunflower family. The component that gives the roots a sweet taste is Fructooligosaccharide, or FOS. The tuberous roots may be made of nearly 50% FOS, and are believed to be the greatest producers of the saccharide in the natural world.

Because the body cannot process FOS, it passes through the system without leaving behind absorbable sugar compounds. It also is relatively low in calories, compared to most other sweeteners. “ Source: www.wisegeek.com

We had an over-abundant supply of yacon that had to be harvested. Yacon (also known as ground apple) grows very easy in our (sub-tropical) climate, one plant produces many rizomes for division and re-planting. It needs very little attention when in the ground and Tom is of the opinion that it improves the soil where it has grown. 

One can only eat so much yacon and we do not like wasting resources, and after visiting a health shop and noticing the latest health craze is yacon syrup, I decided to try and make some. 

I researched a bit on the internet and found that yacon syrup is a healthy sweetener, just what the doctor ordered for us. So if I could get this yacon syrup to work, it would mean we would no longer need to buy any sweeteners, be one step closer to self reliance and receive health benefits.

So I started by digging up a patch of yacon and washing it. To wash it, I put it in a crate and set the hose on it with a fair bit of pressure. I ended up with about 2/3 of a crate of yacon.

I peeled 2 big bowls full of yacon with a potato peeler (about 2/3 of the amount I had). Then I juiced the peeled yacon and poured the juice into a big pot (around 4 1/2 Litres of juice). The pulp ended up with the chickens and the geese.

The pot is on the stove and as you can see some scum is already floating on the top. I kept skimming the scum off the top and once it started to reduce I skimmed it from the sides of the pot as well. 
I brought the pot to the boil and then let it simmer. I started in the afternoon and let it sit on our wood stove overnight. In the morning I brought it to the boil again and skimmed off more scum from the sides and top. By this time the juice had reduced to about 800ml. The juice had become very dark and the smell was a delicious molasses or treacle smell.

I took the pot off the stove and filtered the juice through a fine metal mesh. Any thicker material staying behind I put in a separate container (for use as well, just to experiment with it. It can be added to dishes that require cooking as a sweetener).

Finally I ended up with a jar with 750ml of yacon syrup. It has a beautiful, sweet treacle like flavour. I keep it in the fridge, but I don’t think you need to. We add it to drinks, desserts and just use it as a general sweetener. This abundant resource in our garden is allowing us to enjoy healthy sweets and we no longer need to buy other sweeteners. As a comparison, the jar of yacon syrup in the health shop was around 200ml for $24… And it was most likely imported from South America.

Tom is now looking at possible other uses for this resource, eg adding it to animal fodder or making it into a fuel, if he can get to it before I do.

Finished jar of yacon syrup

©2011 Permaculture Research Institute Sunshine Coast – Self sufficiency: yacon syrup making


  1. Can I buy yucon plants from you or elsewhere? Do you think it would survive in Cairns, or would I need to get someone to grow it for me on the Tablelands?

  2. Thanks for posting this. I had a very successful Yacon crop in Southern California this year and am very excited to make a batch of syrup. I’m curious how many pounds went into the batch pictured here?

    1. Hi Mat,
      I believe the batch pictured here was around 10 – 15kg (about 30 or so pounds?) As the syrup needs a lot of simmering down, it reduces quite a lot. Still enough for substantial sweetness!

  3. Since you started with 4 1/2 liters of juice and finish with 800 ml., can you tell me how long would it take the boiling period.

    1. Hi Bill,
      We usually leave the pot simmering on our woodstove for around 36-48 hours. In that time it has reduced down to a thick black syrup. Only bring to a gentle boil before simmering. Hope this helps!

  4. Can I buy Yakon syrup from you? How much a kilo and do you deliver? Or post? I am in Maroochydore. Thanx

    1. Sorry, we do not sell Yakon syrup. We just make it for personal use here. Yakon is very easy to grow though, so you can have a go at growing and making it yourself if you can!

  5. Where near Maroochydore can I get a rhizome to plant here?

    1. Hi Richie,
      We happen to have some rhizomes here, please email or call us to pick up. Thanks!

  6. That’s amazing that you made you’re own syrup.
    I live down in Victoria. Would you be prepared to sell some of your excessYacons. Thanking you Paulene

    1. Hi Paulene,
      If you get up to the Sunny Coast we may be able to give you some Yakon stalks, which you can just put into the ground to grow. Mailing them may be a bit harder… Please feel free to email me if you would like to discuss, I am also unsure how Yakon would go in a cooler climate, but will ask Tom.

  7. Hi,
    just before you start thickening the syrup you can easily clarify the juice with egg white.
    Makes all the difference.


    1. Thanks Frits, great tip, I will try it next time!

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