How to make icing sugar (2024)

Icing sugar, also known as powdered sugar or confectioner’s sugar, is made by finely grinding granulated sugar until it is a very fine powder. In commercial icing sugar, a small amount of anticaking agent, such as maize starch or tricalcium phosphate (E341), is also added to absorb moisture and help the grains stay separate and free-flowing, rather than sticking together in clumps.

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The anticaking agent used will depend on which country you live in and what's allowed under the laws governing the sale of food. Icing sugar comes either very white or with a light caramel colour – this version is made from unrefined sugar.

How to make icing sugar

If you have run out of icing sugar or can’t find any to buy, you can make your own by whizzing granulated or caster sugar in a food processor, powerful blender, standard blender, coffee or spice grinder, or more laboriously, in a mortar and pestle.

How fine you can get your sugar will depend on the efficiency of your equipment. A powerful blender will give a much better outcome than an ordinary one. It will also depend on what type of sugar you start with. Granulated sugar will give you a more even grind, but it’s unlikely you’ll be able to make quite as fine a powder as commercial sugar, so don’t expect it to be as smooth if you use it in icing, for example.

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Easy icing sugar method

  1. Put the granulated or caster sugar into a grinder (remember if you use unrefined or golden sugar you will get a pale brown icing sugar) and whizz it in bursts until it looks like powder. If it doesn’t seem to be grinding well, make sure you have the right amount of sugar in the appliance – some don’t work as well with small amounts, while others can have the opposite problem.
  2. You can sift everything through a fine sieve if you want to regrind any coarser sugar that still remains. Keep grinding and sifting until the sugar is as fine as you want, or as far as your grinder will take it.
  3. If you are not planning on using all your icing sugar at once, store it in an airtight container and stir in a little cornflour.

Top 5 icing sugar recipes

1. Easy buttercream icing

Use our recipe for quick buttercream icing to slather on your favourite cakes and bakes. This super-smooth frosting is the perfect final flourish for a celebratory sponge. Try our chocolate buttercream icing for a cocoa-tinged treat.

2. Raspberry iced mousse

How to make icing sugar (2)

Need something sweet in a flash? Try whipping up our effortless raspberry iced mousse. It takes just five minutes to make and uses a grand total of four ingredients. This is our ideal speedy summer dessert.

3. Lightest ever meringues

How to make icing sugar (3)

Use white or golden icing sugar to create our lightest ever meringues with an eye-catching stripy, swirly design. Whisk up these delicate beauties for a stunning dinner party dessert. Try different flavourings, such as chocolate, citrus or even Turkish delight.

4. Lemon drizzle slices

How to make icing sugar (4)

Our easy lemon drizzle slices make the perfect afternoon tea treat everyone will love, plus they're really easy to portion out. Make them extra special with our feathered icing technique.

5. Iced blueberry & lime cheesecake

How to make icing sugar (5)

This make-ahead dessert is perfect to keep in the freezer until you need it. Our iced blueberry & lime cheesecake is a zingy combination of fruity flavours that won't look out of place on any table.

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What are your favourite uses for icing sugar? Leave a comment below...

How to make icing sugar (2024)

FAQs

What if I don't have enough icing sugar? ›

To make icing without icing sugar, start by grinding granulated white sugar in a blender for 5 minutes or until it feels fine and powdery. Then, pour the sugar into a bowl and whisk it to make it fluffier and clump-free. Once you've whisked the sugar, just use it as a substitute for icing sugar in your recipe!

How can I mix my icing sugar? ›

Put the icing sugar into a small or medium bowl and add water. Mix together until the icing becomes thick enough to coat with a back of a spoon. If necessary, add more water (a drop at a time) until it is thick/ thin enough to use.

What if I run out of icing sugar? ›

If you have run out of icing sugar or can't find any to buy, you can make your own by whizzing granulated or caster sugar in a food processor, powerful blender, standard blender, coffee or spice grinder, or more laboriously, in a mortar and pestle.

What to do if you don't have enough sugar for a recipe? ›

For basic baked goods like sugar cookies or pound cake, using maple syrup or honey instead of sugar lends the finished product a little extra flavor. You'll need a little less of these sweeteners for your recipe—just ¾ cup of maple syrup or honey replaces a full cup of granulated sugar.

What is a substitute for icing sugar? ›

How to make icing sugar. If you've run out of icing sugar, the best way you can replicate the real thing is to make it yourself. If you have a food processor, blender, grinder or pestle and mortar, all you need to do is grind granulated or caster sugar until you get a powdered texture.

Is it cheaper to make your own icing sugar? ›

Homemade powdered sugar is perfect for when you need some in a pinch and don't want to run to the store. It has the added bonus of being cheaper than store-bought. However, since we're just using household appliances homemade powdered sugar might not be as fine and fluffy as the commercially manufactured kind.

Is powdered sugar the same as icing sugar? ›

Let's get it out of the way: Is confectioners' sugar powdered sugar? Yes! Powdered sugar, confectioners' sugar (including confectioners sugar and confectioner's sugar too), icing sugar, and 10X (a reference to the size of the particles) are all the same.

How much icing sugar does 1 cup of sugar make? ›

Homemade powdered sugar is so easy to make! Learn how in this simple tutorial. Use any sugar you have on hand (healthier options like coconut sugar and turbinado sugar work great!). One cup sugar will yield about two cups powdered sugar.

What can you add to icing sugar to make it thicker? ›

Add small amounts of ingredients like powdered sugar, cornstarch, gelatin, heavy whipping cream, or cream cheese to make your frosting less runny. For flavored frostings, ingredients like cocoa powder and peanut butter can also work. When your frosting is the right consistency, it'll be easy to spread or pipe.

What's the difference between icing sugar and frosting? ›

Icing is thinner than frosting but not quite as thin as a glaze. Typically made with powdered sugar and liquid, such as water, milk, or juice, icing can be drizzled or spread. Icing has more shine and a smoother consistency than frosting.

Is milk or water better for icing sugar? ›

Powdered sugar – Also known as confectioner's sugar, it dissolves easily making a smooth icing. Liquid – You can use water or milk. For decorating cookies, I use water. For drizzling cakes and pastries, I like to use milk for a nice and creamy glaze.

What if I don't have enough powdered sugar? ›

It is possible to simply use granulated sugar in a slightly smaller amount, though you'll have to accept that the texture may not be ideal, especially for icing or other recipes that are supposed to be super smooth. Just substitute 1 cup of granulated sugar for every 1 ¾ cups powdered sugar and proceed as directed.

What is icing sugar made of? ›

Icing sugar is made by crushing or pulverising pure white sugar into powder using a blender. Around the world icing sugar is also known as confectioner's sugar and powdered sugar. Its powdered form dissolves instantly, making it perfect for things like icing, whipped cream and sugar cooking.

What are the disadvantages of icing sugar? ›

While powdered sugar is a source of quick energy due to its high carbohydrate content, it lacks significant nutritional value. Consuming large amounts of sugar can contribute to weight gain, tooth decay, and increased risk of chronic diseases such as diabetes and heart disease.

What to do if you run out of powdered sugar for icing? ›

It is possible to simply use granulated sugar in a slightly smaller amount, though you'll have to accept that the texture may not be ideal, especially for icing or other recipes that are supposed to be super smooth. Just substitute 1 cup of granulated sugar for every 1 ¾ cups powdered sugar and proceed as directed.

What happens if I use normal sugar instead of icing sugar? ›

"Regular sugar has a larger crystal size than powdered sugar," he explains. "This means, cup for cup, there would be more sugar in a cup of powdered sugar than in a cup of regular sugar." In addition to inconsistent measurements, regular sugar won't dissolve and mix as well into recipes like frosting and icing.

How do you thicken icing if you run out of powdered sugar? ›

2. Add corn starch. If you want to thicken your royal icing without adding additional sugar, you can add a minimal amount of corn starch (less than a teaspoon) to help your icing thicken up.

What happens if you don't put enough sugar in a cake? ›

Sugar provides more than just sweetness to your baked goods. Without enough sugar, your baked goods might turn out rubbery, pale, or dry. Whenever you want something to be less sweet, refer to this guide to find out how much sugar to reduce.

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