How to Make a Cornstarch Slurry

Site Index Cornstarch Flour How-To

This post may contain affiliate links. See my privacy policy for details.

A lot of recipes tend to call for a cornstarch slurry to be mixed in at the last minute to thicken. But how exactly do you make a flour or cornstarch slurry?

For more helpful guides on cooking at home, why not learn how to make an Egg Wash or make some Homemade Bisquick instead? 

cornstarch slurry

How to Make a Cornstarch Slurry

Making a cornstarch slurry is a really simple thing but requires a bit of understanding to do it properly. In fact, most people that frequently use starch slurries learned how to do it from a young age, so much so that it becomes second nature to them.

Common in Asian cuisines, starch slurries allow you to really easily thicken a soup or broth without having to prepare a roux beforehand and cook it at the very beginning of the recipe.

Thanks to the thickening power of either flour or cornstarch, what was previously a thin liquid mixture can instead be thickened into a more pleasant texture.

If you don’t know how to make a slurry yourself, it is absolutely a mandatory thing for any aspiring cook to learn at some point.

ingredients for cornstarch slurry

Flour or Cornstarch Slurry Ingredients

Make sure you look at the recipe card at the very bottom for the exact amounts.

• Cornstarch (or flour)

• Water

How To Make Flour or Cornstarch Slurry

• Combine the two ingredients until smooth and creamy

• Whisk rapidly into whatever soup or stew you need to thicken

• Continue to cook the dish until the sauce has thickened properly

whisking a cornstarch slurry

Differences Between Flour & Cornstarch Slurries

There are so many different recipes that call for some kind of starch slurry to help thicken everything. However, there is never really any explanation for when you should use flour slurry or a cornstarch one.

Though they are made of different types of grain, thanks to the relatively small amount of the slurry you actually use in a recipe, there isn’t really any kind of taste difference.

The main difference is the amount of further cooking that they require. A cornstarch slurry can thicken anything you put into it as soon as it has become completely mixed in and heated.

A flour slurry, meanwhile, requires a good amount of cooking before it actually starts to thicken. This is because the flour needs time to gelatinize before it can really thicken anything.

This is the reason that most recipes prefer to use cornstarch slurries rather than flour, though flour is obviously a lot more common than cornstarch in most homes.

A key thing to keep in mind for those that don’t live in the USA – cornstarch is sometimes called “cornflour” in other countries. Cornstarch should look like a very fine white powder, whereas cornmeal is the rougher, larger pieces of ground-up corn.

thickening chicken fricassee with a cornstarch slurry

How To Make Sure Your Mixture Thickens Properly

Most recipes that call for a starch slurry usually just say to mix it together and then dump it into your recipe, completely ignoring how to actually do it properly.

The key thing to do to make sure that your starch mixture thickens properly is to make sure that the starch is completely and totally mixed together before you use it.

A lot of people just mix it together using their fingers, but you can also use a small teaspoon or even a tiny whisk to get everything incorporated. If you don’t mix it properly, you can wind up with dry bits of starch remaining in your recipe, which means that it won’t thicken your food at all.

Looking for more delicious Kitchen Tips? Try these out:

How to Spatchcock a Chicken

How to Ripen Bananas

Hope that helps someone in the kitchen!

Love,

Karlynn

Don’t forget to PIN THIS RECIPE to your COOKING Board and remember to FOLLOW ME ON PINTEREST!

How to make a cornstarch slurry to use in dishes to thicken sauces or broths.

Thanks to ads on this website, readers of The Kitchen Magpie are now sponsoring 2 families a month through the Edmonton Food Bank. Learn how you can help here.

Learn to cook like the Kitchen Magpie

Subscribe to The Kitchen Magpie on YouTube

One click and you’ll get notified of new videos added to our YouTube account!

youtube-subscribe

How to Make a Cornstarch Slurry

How to make a cornstarch slurry to use in dishes to thicken sauces or broths.
No ratings yet
Prep Time
2 minutes
Course
Sauces
Cuisine
American
Servings
1
Author
Karlynn Johnston

Ingredients
 

  • 1 tablespoon cornstarch
  • 2 tablespoons water

Instructions
 

  • Combine the two ingredients until smooth and creamy.
  • Whisk rapidly into the soup/stew that you need to thicken, until fully combined. Cook the dish until the sauce has thickened to your liking

Recipe Notes

  • You can double or triple this recipe as needed. 

All calories and info are based on a third party calculator and are only an estimate. Actual nutritional info will vary with brands used, your measuring methods, portion sizes and more.

Made this recipe?

Share a photo of what you made on Instagram or Facebook and tag me @thekitchenmagpie or hashtag it #thekitchenmagpie.

Please rate this recipe in the comments below to help out your fellow cooks!

Save Your Favorite Recipes!
Create an account and save recipes

Karlynn Johnston

I’m a busy mom of two, wife & cookbook author who loves creating fast, fresh meals for my little family on the Canadian prairies. Karlynn Facts: I'm allergic to broccoli. I've never met a cocktail that I didn't like. I would rather burn down my house than clean it. Most of all, I love helping YOU get dinner ready because there's nothing more important than connecting with our loved ones around the dinner table!

Learn more about me

Site Index Cornstarch Flour How-To

Reader Interactions

Leave a Comment or Recipe Tip

Recipe Rating




This site uses Akismet to reduce spam. Learn how your comment data is processed.

Grandma's Thanksgiving Recipes

Five of her favorite recipes delivered straight to your inbox!

FREE!

Thank

You!

Follow us on Facebook