Isomalt Basics for Home Bakers – All About Isomalt

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Using isomalt is an easy way for bakers of all skill levels to create impressive looking sugar art. This post discusses what isomalt is, where to buy it, and how to use it to make sugar curls and blown sugar.

I love teaching home bakers about simple tricks that professional pastry chefs use to make cakes look amazing (like decorating cakes with edible flowers). Using isomalt, a sugar alcohol, is a great way to create dazzling decorations for your desserts.

Cake decorated with lots of isomalt decorations
Pastry Chef Tyler Davis, formerly of The Chocolate Pig in St. Louis, worked with me on an isomalt Q&A to get you started using this super fun sugar alcohol to create decorations that will be sure to impress your friends and family. The information in this post is based on my interview with him. (You can also watch the full video interview toward the end of the post.)

What is Isomalt?

isomalt powder being poured into a skilletIsomalt 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!

When you heat normal 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. Isomalt is very forgiving. As long as you don’t burn it, you can melt down isomalt and reuse it again and again.

Sugar absorbs moisture in the air or the refrigerator and loses its crispness. 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 cakes, it also looks amazing on top of cupcakes!

Can You Eat Isomalt?

isomalt decorations on top of a cupcakeIf you eat isomalt in large quantities, it will make you sick. Do not replace the sugar in a dessert recipe with isomalt!

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 in small pillow format that is pre-colored and microwavable!

How to Melt Isomalt

Unless the isomalt you buy tells you otherwise, 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 sugar 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)

For everything but glitter spray, mix in the coloring agent while the isomalt is hot in the skillet.

adding food coloring to a skillet of isomalt

Safety Precautions When Working With Isomalt

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 isomaltWork 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 itMelt 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 curlsWrap 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

Video of Isomalt Tips and Tricks

Other Fancy Cake Decorating Techniques

Now that you know a thing or two about working with isomalt, you can make more fantastic decorations by pouring isomalt into molds.

Give mirror cake a try. It is so shiny that you can see your reflection in it.

Tyler Davis on a green chair holding a cake
Chef Tyler Davis is a St. Louis-based pastry chef. 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, moved on to The Chocolate Pig, and has been creating magical experiences ever since.

Isomalt Basics for Home Bakers - All About Isomalt

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2 comments on “Isomalt Basics for Home Bakers – All About Isomalt”

  1. Haniesays:

    Thank youuuu
    It was great recpi recepie

  2. Brandysays:

    What kind of brass fitting did he get for his sugar blower?

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