How much cornstarch is in powdered sugar? (+3 Ways to use)

In this article, we will answer the question “How much cornstarch is in powdered sugar?”, and how to make powdered sugar at home?

How much cornstarch is in powdered sugar?

Use 1tsp of cornstarch for a cup of granulated sugar. When using 2 cups, use 2 tbsp of cornstarch/cornflour. cornstarch/cornflour is added to keep the powdered sugar from clumping or caking during storage.

If you will be using the powdered sugar immediately, cornstarch is not needed. If It is to be stored for a longer period, you need to add cornstarch/cornflour. Read on If you want to know how to make powdered sugar at home.

How to make powdered sugar at home?


  • 2 cups (16oz/450g) white sugar
  • 2 tablespoon cornflour (cornstarch)

You can use raw turbinado sugar/sucanat, maple sugar, or coconut sugar instead of regular white sugar. However, avoid using brow sugar because It has molasses in it due to which will have a stickier texture.


  1. You need to have an efficient blender like a spice grinder, Nutri bullet, Vitamix, or food processor.
  2. Then add sugar followed by cornstarch or cornflour.
  3. The sugar will be completely powdered in about 3-4 minutes. After that scrape, the powdered sugar from the sides using a spatula. If you see granules, blend for another few minutes.
  4. If the sugar still feels gritty try working with another more powerful blender.
  5. When done, store your powdered sugar in an air-tight container. It will keep fresh indefinitely unless exposed to moisture.

Uses of powdered sugar

  • It can be whipped with butter and heavy cream to make frosting which can be used to decorate cakes, cupcakes, and more.
  • It can be used to make Rolled Fondant, Snowball Cookies, and Homemade Sprinkles.
  • It can be dusted onto doughnuts, cannoli, or pancakes.

How to differentiate Powdered sugar, Confectioner’s sugar, and Icing sugar?

All of them are the same thing. Confectioner’s sugar or icing sugar you get in the market already has cornstarch added to prvent caking or clumping. Confectioner’s sugar/icing sugar/powdered sugar is made using low-quality ingredients like heavily processed white sugar and low-grade cornstarch.

When It comes to making powdered sugar at home, you have much more control over the flavor and nutrition of the sugar. Go with a less refined granulated sugar because It retains some of the trace minerals and adds a different flavor to the end product.

What is cornstarch?

Corn starch or cornflour is ground from the corn kernel. Maize kernel is 72-72% starch by weight and it is present in the grain endosperm. Cornstarch is used as a thickening agent in food. It is used to thicken gravies, curries, soups, and custards.

As a result of cornstarch gelation, the liquid develops a translucent appearance rather than an opaque one, which is the case for most thickeners. Therefore, cornstarch is preferred for culinary uses.

It is also used as an anti-caking agent in powdered sugar or baking powder. In the paper industry, it is used as an anti-sticking agent. This versatile product also finds its uses in the textile industry.umps

What is the difference between cornstarch, cornflour, and cornmeal?

Corn flour and cornmeal are essentially the same since they’re just ground maize. However, they differ in their texture. Corn flour is ground to a fine powder as compared to the coarse ground of the cornmeal.

If you use cornmeal for pancakes and muffins, the end product will have a grittier texture. On the other hand, using cornflour will impart a finer and less crumbly texture to the pancakes and muffins.

Cornstarch is the starch extracted from the endosperm of the corn seed. The hull and germ of the corn seed are removed during processing. They can be further processed to make corn oil and corn bran. Cornstarch is used to thicken stews, pies, sauces, soups, gravies, curries, desserts, etc.

How to store Brown sugar?

  • Just like white sugar, brown sugar should also be stored in a cool, dry, and dark place away from heat sources like sunlight and stovetop. The pantry or a kitchen cabinet would work fine. 
  • Keeping the sugar away from moisture is very important to avoid spoilage because sugar is hygroscopic in nature.
  • If the package of sugar is unopened, leave it in its original packaging. Once opened, keep the sugar tightly sealed at all times. A tight seal protects the sugar against bugs and unwanted odors.
  • With the passage of time, brown sugar loses moisture and becomes hard and clumpy. To solve this problem, a lifesaver gadget, sugar saver, can be used.

Other FAQs about Cornstarch that you may be interested in.

Does cornstarch lose its effectiveness?

Can you freeze gravy made with cornstarch?

What can I substitute for Cornstarch?


In this article, we answered the question “How much cornstarch is in powdered sugar?”, and how to make powdered sugar at home?