How to Make Powdered Sugar

Co-authored by wikiHow Staff

Last Updated: October 28, 2022 References Tested

Your cookies are nearly ready to ice, but your bag of powdered sugar has only a few sad specks of dust. Before you run to the store, check your pantry. You can make your own powdered sugar using just two ingredients: granulated sugar and cornstarch.

Ingredients

1 cup (200g) sugar
1½ tsp (7.5mL) cornstarch (recommended)

Part 1

Part 1 of 2:

Blending Sugar into Powder

1
Choose a blender or spice grinder. Keep in mind that sugar can scratch plastic or weak glass.^{[1]
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Research source} A high-powered blender is the fastest and most effective option, but any blender or spice grinder can do the job.
- Spice grinder or coffee grinders — which are essentially the same tool — pick up flavors from the ingredients they grind. Clean it thoroughly before using it for sugar.
- Many food processors will not work, possibly due to their large size.^{[2]
  X
  Research source} You can try it with your machine, but you may end up with superfine sugar, or an uneven mix of superfine and powder.^{[3]
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  Research source}
2
Dry the equipment. Wipe the inside of your blender or spice grinder with a dry cloth. Any residual moisture from the last rinse will make the sugar stick to the sides.

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3
Measure white granulated sugar. Only blend a maximum of 1 to 1½ cups (200–300g) in an average blender, or 2 cups (400g) in a high-powered one. Any more may block the blades from pulverizing all your sugar. For a spice grinder, just add as much as can comfortably fit, leaving a little space.
- For your first try, assume that 1 cup of granulated sugar will make 1 cup powdered sugar. A strong blender may be able to break it down almost to half volume, but it will be easy to grind more if you encounter this "problem" of perfectly powdered sugar.
4
Add cornstarch (recommended). This step is mandatory for making glazes and icing, as it thickens the sugar into a proper paste. Even for other recipes, the starch will help prevent the powdered sugar from clumping due to moisture absorption. For each cup (200g) sugar, add 1½ teaspoon (7.5mL) cornstarch.
- This ratio is very close to the 3% mix used in commercial powdered sugar.^{[4]
  X
  Research source} While most online powdered sugar instructions call for more cornstarch, the result may behave unpredictably in recipes, or have a poorer taste.
- Arrowroot powder is a good substitute for those avoiding corn products.
5
Blend or grind until powdered. Blend or grind for 30–40 seconds, then take a look at the result. Repeat until powder flies up into the blender, and there are no visible crystals (usually 1–3 minutes total blending time). Leave the blender or spice grinder closed until the dust settles.
- Blending too long without pause may burn the sugar.
6
Sift the sugar. Sift through a fine mesh to catch clumps. This is especially important if you are making an icing or glaze.
- If not using the sugar immediately, just sift right before using it in a recipe.
7
Store powdered sugar in an airtight container. In theory, the sugar will last indefinitely. In practice, powdered sugar rapidly picks up moisture in the air. Keep the sealed container in a dry pantry or cupboard to slow the inevitable clumping. Store it away from sources of heat as well, which tend to increase humidity.^{[5]
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Research source}
- If the sugar clumps, sift it again before using it in a recipe.

Part 2

Part 2 of 2:

Variations

1
Blend with brown sugar instead. Although this is possible, the results will not be as fluffy or even as white sugar.^{[6]
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Research source} Brown sugar has extra moisture content, which can make it difficult to pulverize. Look for "free-flowing" brown sugar, or add an extra ½ tsp (2.5mL) cornstarch.^{[7]
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Research source}
- Do not use this semi-powdered sugar for icing, as it may turn out grainy and dark-tinted.
2
Tint your sugar. Add color to powdered sugar by mixing in special "decorating dusts" available at baking supply stores. Avoid ordinary food coloring, which may dissolve the sugar.^{[8]
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Research source}
- If you use the powdered sugar for icing or glazes, just mix in ordinary food coloring to the final result.
3
Mix in spices. If you decorate baked goods with your sugar or mix it into sweet drinks, add a little flair and flavor. Just toss in cinnamon or your favorite dessert spice into the jar, seal, and shake until blended. To get fancy, look for special powdered flavor extracts at kitchen supply stores.

Community Q&A

Question

Can you use Splenda instead of sugar?

Community Answer

Yes. Splenda is a substitute sugar, but it does taste different than regular sugar. Follow the directions on the box for equivalents.
Question

Can powdered sugar be turned into regular sugar?

Qamar

Top Answerer

No, you cannot change powdered sugar into regular sugar.
Question

Can I make a frosting without powder sugar?

Community Answer

Make Icing Without Icing Sugar.

Warnings

Powdered sugar and granulated sugar are not interchangeable in most recipes. The starch in the powdered sugar will absorb moisture in dough and batter, and the smaller grains are ineffective at creaming butter.^{[9]
X
Research source} Going the other way, granulated sugar will add an unpleasant grainy texture to your icing.

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