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Isomalt Basics for Home Bakers

Using isomalt is an easy way for home bakers to create impressive looking sugar art. Learn what it is, where to buy it, and how to use it to make sugar curls and blown sugar.

Cake decorated with lots of isomalt decorations

I love teaching home bakers about simple tricks that professional pastry chefs use to make cakes look amazing (like decorating cakes with edible flowers). 

Pastry Chef Tyler Davis of The Chocolate Pig in St. Louis worked with me on an Isomalt Q&A to get you started on using this super fun sugar alcohol to easily create stunning cake decorations. The information below is based on my interview with him. You can also watch the full video interview below.


What is Isomalt?

isomalt powder being poured into a skillet

Isomalt is an extremely stable sugar substitute used for sugar art cake decorations. It’s a sugar alcohol that acts structurally just like a sugar would so you get all of the cool properties of working with table sugar without the negatives!

Sugar problem: When you heat sugar to work with it, it can crystallize in the pan. At that point, you need to throw it out. It can’t be saved.

Why isomalt is better: Isomalt is very forgiving. As long as you don’t burn it, you can melt down isomalt and reuse it again and again.

Sugar problem: Sugar absorbs moisture in the air or the refrigerator and loses its crispness.

Why isomalt is better: You can refrigerate isomalt or even leave it sitting out for a month or more and it will still be beautiful and crisp!

While you can use isomalt to decorate super fancy cake, it also looks amazing on top of cupcakes

Can You Eat Isomalt?

isomalt decorations on top of a cupcake

If you eat isomalt in large quantities, it will make you sick. Do not use isomalt to replace sugar in a dessert recipe.

That said, it is totally fine to eat small qualities of isomalt. For example, you would not get sick from pulling one of the pieces of isomalt off of the top of the financier above.

Isomalt tastes sweet with a nice crunch – picture an unflavored lollipop. Just like a lollipop, you can flavor the isomalt with extracts and candy oils.

Where to Buy Isomalt

bag of isomalt crystals labeled CK

Isomalt is easy to find. You can find it at candy supply stores, Michael’s sometimes carries it, or you can buy isomalt on Amazon.

Isomalt comes in a variety of forms – crystals, slabs, and powder. The powder format is the easiest to melt.

Some companies like Evil Cake Genius even sell isomalt that in small pillow format that is pre-colored and microwavable!

How to Melt Isomalt

Use a nonstick pan to melt isomalt. Make sure that none of the surface of the pan is peeling off or the isomalt can get stuck in those crevices and under the non-stick surface, ruining both the pan and the isomalt.

Melt the isomalt on medium heat until it turns completely clear. If you are using the powder, the isomalt should melt in about four minutes (it will take a little longer with crystals).

melted clear isomalt in a skillet

How to Color Isomalt

Isomalt is really easy to color. You can use:

  • gel colors
  • liquid food colors
  • powdered colors
  • glitter spray (which sticks to the isomalt after it’s shaped)

Mix in the color while the isomalt is in the skillet.

adding food coloring to a skillet of isomalt

Safety Precautions

Because isomalt is over 200 degrees Fahrenheit when melted, always wear three or four pairs of rubber gloves to protect your hands from the heat. It’s also a good idea to wear long sleeves (Tyler didn’t, but remember that he is a pro). If you get hot isomalt on your skin, it will take your skin off.

How to Make Isomalt Curls

Melt isomalt and add food coloring as explained above.

Cool isomalt using a large silicone mat. To do this, pour the isomalt out onto a large silicone mat. Lift one corner of the mat and pat the isomalt. Repeat with the other corner. Keep going until the isomalt is cool enough to touch with rubber gloves.

Folding a silicone mat to cool down isomalt

Work the isomalt in your hands a little bit. Then, stretch it to increase its elasticity.

Two people stretching isomalt

It doesn’t take two people to stretch isomalt, but it is fun! Also, I’m not wearing gloves because Tyler cooled the isomalt down until it was comfortable to touch before I started stretching.

Create the curls by winding the stretched isomalt around a long narrow object:

  • metal cylinder
  • knife honing rod
  • your finger

winding isomalt around a finger

Once you get it to the shape and length that you want, push it off gently.

Completed orange isomalt curl

How to Make An Isomalt Globe (Blown Sugar)

You can create your own sugar blower to blow the sugar using a blood pressure pump from a drug store and a brass fitting from a hardware store.

Blood pressure pump curled around with isomalt globe next to it

Melt isomalt and cool it down on a silicone mat the same as you did for the isomalt curls.

Work the isomalt in your hands just a little and roll the isomalt into a ball.

Flatten to form a disc that has even thickness all the way around.

making a disc to use for isomalt curls

Wrap the disc around the brass fitting on your sugar blower. Only the very tips of the disc should touch the pump. Clamp the the whole thing down and hold tightly with your fingers.

Turn your hand upside-down. The gravity will help to keep the globe round.

Press the pump slowly 2 to 4 times, never fully releasing the pressure. The globe will inflate. If you release the pressure, the globe will start to deflate.

Hand clamped down over isomalt on pump

Remove the globe from the pump and either cut off the end for a clean edge or pull to create an elongated rim.

Isomalt globe on a cake

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Tyler Davis on a green chair holding a cake

Chef Tyler Davis is the pastry chef at the Chocolate Pig in St. Louis. After landing a gig as the garde manger for The Crossing, he worked in numerous other kitchen positions, paving his own path in the St. Louis dining scene. His resume includes a number of popular St. Louis spots – Ernesto’s Wine Bar, where he was the sous chef, Benton Park Café where he was kitchen manager, and the Tavern of Fine Arts, which taught him about the importance of building rapport with customers. Chef Davis gained national attention when he appeared on the Food Network’s third season of Halloween Baking Championship, and was nominated for Feast Magazine’s Top Pastry Chef of the Year. He started working on the sweeter side of the kitchen as pastry chef at Element Restaurant, and has been creating magical experiences ever since.

Isomalt is a super fun sugar alcohol that is sweet with a nice crunch used to create stunning cake decorations! As long as you don’t burn it, you can melt down isomalt and reuse it again and again. You can use it to decorate cupcakes too!
Isomalt Basics for Home Bakers
Article Name
Isomalt Basics for Home Bakers
Complete beginners guide to isomalt! Get started making fancy sugar decorations for cakes and cupcakes. Step-by-step text and video Q & A.
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Cupcake Project
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