Making Polymer Clay Frosting & Icing

My only existing tutorial on how I make polymer clay frosting and icing is three years old, so I felt like an updated version was needed. Nothing has changed in the way I make frosting, but I thought that from a viewer's point of view, an HD version would be more enjoyable.

Before we begin, I would like to say that this is a method I developed on my own while learning to make cakes and after experimenting with different materials. I want to say this, because when I get asked how to make frosting on Youtube, many people answer before me saying "it's easy, you just mix solid clay and liquid clay together". I understand that this method has become well known because of my videos and that now it seems kind of obvious to mix the two. But when I started it wasn't evident to me and it took me months to understand what materials I wanted to use, and even longer to obtain the consistencies I wanted. I repeat, this is my method and not a "universal" one. It doesn't mean this is the only or the best method, and it definitely doesn't mean you can't come up with a method of your own.

The first thing you'll need is Polymer Clay:

As I mentioned in my tutorial, any brand and type of polymer clay will work. Now because there is a lot of mixing involved and breaking the clay with your tools, I recommend using soft clays like:

🍓 FIMO Soft

🍓 Sculpey III

🍓 Premo! by Sculpey

🍓 Sculpey Soufflé

It till take you less time, because these clays are very soft straight from the packet, and your hand and fingers will thank you. It too me less than 5 minutes to make the frosting in my tutorial!

Most of the brands mentioned above come in classic frosting colours like chocolate or strawberry, but in the case in which they don't or you'd like a different shade, colours can be mixed together, independently from the brand.

The other material you'll need, is liquid polymer clay. This can be:

🍓 FIMO Liquid

🍓 Translucent Liquid Sculpey (TLS)

🍓 Sculpey Bake & Bond

🍓 Kato Polyclay

These are some of the best known and any of these will work, but there are other brands available, some in metallic finishes as well.

I prefer to use FIMO Liquid, simply because it's very versatile and I can achieve both translucent and opaque effects by simply adjusting the amount of solid polymer clay or colouring agent in the mix.

The other three liquid polymer clays mentioned above are more white-ish looking and they have a more opaque finish.

What tools do I recommend for mixing liquid clay and solid polymer clay?

I recommend using a firm flat tool like the metal tool seen in my tutorial, a firm spatula, a knife or similar. Plastic tools can bend and/or break, it might take you longer to mix the clays together and a lot of elbow grease.

How much FIMO liquid do I add to the polymer clay?

I get this asked a lot and the truth is I don't know exactly. I always eyeball it. Moreover, I always use different amounts of solid clay so of course the amount of FIMO liquid will consequently vary, and it also depends on the consistency I'm after.

I suppose the one rule to keep in mind is that if you are looking to get a thick frosting, then you need to add less FIMO Liquid. Proceed a little a time so as to not go overboard. To say I add a third or fourth of liquid clay compared to the amount of solid clay, is a close guess I guess.

I used this recipe to make the mint frosting for my French Macaron Cake.

If you are looking to achieve a runny glaze like perhaps the one on a doughnut, then you'll need more liquid clay than solid.

I used this recipe to make the pink icing on my French Macaron Cake. You can watch the tutorial for this cake on my Youtube Channel.

Making "HONEY" , "MELTED BUTTER" or "SYRUPS" (Translucent Effect):

You can use the "icing" method mentioned above to achieve this effect, by mixing FIMO Liquid and a speck of polymer clay in the desired colour.

You can also mix FIMO Liquid with any of the following:

🍓 Soft Pastels

🍓 Chalk Pastels

🍓 Oil Pastels

🍓 Mica Powders

🍓 Eye Shadows

Some oil pastels can be a bit crumbly and not mix well so be aware of that.

Some mica powders may be "matte" and appropriate for the use on miniature food, unless you are going for a glittery glaze, in which case is fine too.

The same happens with eye shadows.

If you use these materials, remember not to exceed the amount of colouring agent so as to make sure that the liquid polymer clay cures properly. These colouring agents are not clay and they may change the behaviour/chemistry of the liquid polymer clay.

Why I don't recommend mixing ACRYLIC PAINT with either liquid or solid polymer clay?

Acrylic paint is water based whereas polymer clay (both solid and liquid) is PVC resin based and also has plasticizers (which are responsible for the clay to bond and harden during baking), so they don't mix well.

In the tutorial you can see the difference between using oil paint and acrylic paint.

The oil paint mix is smooth and shiny compared to the acrylic mix, which is bumpy and bubbly, and you can see holes where the water has tried to escape while evaporating in the oven.

How Do I Store My Polymer Clay Frosting & Icing?

I use either small glass jars (like empty make-up or cosmetic containers) or soft plastic containers. By soft plastic containers, I mean flexible boxes like tupperware or the compartment box seen in my thumbnail (first picture in this blog). I learned from experience, that hard plastics like that of a CD case, will react to polymer clay and become sticky.

You can also use small tin containers.

I don't recommend using compartment storage containers with interchangeable grids, as the icing may run from a compartment to another.

I don't even recommend the box I use, because the lids don't close hermetically. But I bought it online and I only realized when I used it.

Please note that the storage box in my list of products and materials is a suggestion based on what I can perceive from the picture (the kind of plastic, the way they shut and the individual lids).

Baking Polymer Clay

I use a regular kitchen oven to bake my polymer clay and I bake it between 110°C and 125°C for at least 15 minutes if I'm pre-baking and for 30 minutes or longer to finish and to make sure it is cured completely, all the way through.

Baking your polymer clay for longer won't burn your clay, as long as you keep the temperature below 130°C. In fact, baking it longer makes it stronger. It's not about the time, it's about the temperature when it comes to burning it.

Never exceed 130°C. Buying an oven thermometer can help you make sure you are baking your pieces at the right temperature.

You can watch my NEW Polymer Clay Frosting & Icing Tutorial Below:

For the full list of products seen and mentioned in this video with links to where you can find them, please read the video description in my channel.

#howtomakepolymerclayfrosting #polymerclayicing #fimoicing


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© Maive Ferrando 2019