How to make powdered sugar

Step 1

Measure out the sugar and add it to the blender or spice/coffee grinder. If you're using a grinder, you may need to do this in several batches.

Step 2

If you're making homemade powdered sugar to store in the pantry for long-term storage, then it's best to add cornstarch (or another starch that is safe to be eaten while raw) to the ground sugar. This will work as an anti-clumping agent. Add 1 Tbsp starch per cup of powdered sugar.

Step 3

Blend/grind into a fine powder. In a high-speed blender, you may want to pause the machine and scrape down the sides with a spatula to make sure it's all blended equally. This can take as little as 30 seconds up to 3-4 minutes based on the blender size and strength. Using a coffee/spice grinder, the process takes around 30 seconds.

Step 4

Sift the powdered sugar into a container, repeating the grinding process for the larger pieces until it is all fine. When rubbing a little of the powdered sugar between your fingers, it should feel super fine with very little, or even no grainy texture.

Step 5

Homemade powdered sugar without cornstarch is best used immediately to avoid clumping. However, if starch is added, the sugar can last years when stored in an airtight container.