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Gluten Free Starches: Arrowroot, Tapioca, Potato and Cornstarch

By Christine January 7, 2014 Updated March 29, 2019 6 Comments

Updated 11/4/2018

If you’ve seen different gluten free starches mentioned in recipes and ever wondered what the differences are or ‘why so many starches?’; you are in the right place!

 

Gluten free baking introduces you to lots of flours, starches and other ingredients that you’ve probably never even heard of before, let alone used. But I promise you, all those funny sounding flours come together to make foods that are just as tasty as gluten-containing foods.

Starches are a key ingredient in helping you to achieve those delicious baked goods. They can be used as a thickener for sauces and can add moisture, lightness, and texture to baked goods.

Most of the time, starches are combined with other flours since each ingredient helps create the perfect balance of fiber, protein and texture. But sometimes starch is used all by itself.

This recipe for instance - these dinner rolls use no flour whatsoever, starch is the main ingredient. And they turn out fantastic.

But not all starches are made the same. Different types produce different results (mostly in taste) and even different brands vary in their results too. I hesitate to say that these starches are interchangeable, even though in theory, they are. But as you’ll see in my recipes, I often find that one works better than another.

Below are 4 of the most common types and how to use them…

Gluten Free Starches

Arrowroot Starch

Arrowroot starch on a wooden spoon

Arrowroot starch comes from the arrowroot plant tuber. It is mostly carbohydrates and makes wonderful biscuits, cakes, hot sauces, and pudding. In Asian cuisine, Japanese arrowroot (kudzu) is used to make noodles. It works well to thicken up sauces and is often used instead of cornstarch. Unlike cornstarch or other thickeners that make a sauce that is cloudy, arrowroot sauces are clear. It also adds body and texture to baked goods, or can be used to bread veggies, chicken, and fish.

Expert tip: Arrowroot is not high in nutrition. In fact, it has no protein and contains about 3% fiber. (As opposed to a flour like almond flour, that has 10% fiber.) It is not a grain so it’s suitable for a grain free diet.

This bagel recipe uses arrowroot starch.

Potato Starch

potato starch on a wooden spoon

As you can probably guess, potato starch comes from crushed potatoes. The starch is then washed and dried out. Although potato starch doesn’t offer much in the way of nutrition, it does help to add moisture and texture. Because it absorbs a lot of moisture, potato starch is a good starch to use if you are baking something you want to be crispy. Potato starch should be combined with a gluten-free flour for the right balance in the end result.

Expert tip: Potato starch is a good thickener and gelling agent. It is wonderful in yeast breads, biscuits and muffins. It contains 0 protein and 0 fiber. Potato starch is also suitable for a grain free diet.

Potato starch is used in this bread recipe.

Tapioca Starch

tapioca starch on a wooden spoon

Tapioca starch is one of the most common starches used in gluten free baking. It comes from the root of the cassava plant it is often referred to as tapioca flour. Like arrowroot and potato starch, it is not high in nutrition and it won’t add flavor to your cooking. It adds structure to baked goods and will make them nice and golden brown. It can also be used as a thickener in sauces and gravy or as a batter coating.

Expert tip: Tapioca starch is one of my favorite starches for baking because it adds a chewiness to baked goods. Things like biscuits, yeast breads and cakes are ideal for tapioca starch. It is grain free as well. Like potato starch, it has 0 protein and 0 fiber.

See tapioca starch in action in these recipes.

Cornstarch

cornstarch on a black spoon

Cornstarch is a good substitution for potato starch or tapioca (although if you do make this substitution, you should add in a leavening product such as baking powder or baking soda). Although it won’t help your baked goods rise as much as tapioca, it will provide flavor and a crispy texture. And, cornstarch is very easy to find and relatively inexpensive.

Expert tip: Cornstarch is a grain so it’s not suitable for grain free diets, it is vegan however. Cornstarch also contains 0 protein and 0 fiber.

Cornstarch is found in my gluten free flour blend.

One more tip when using starches for cooking: a grain starch such as cornstarch is good to use when you want to thicken something right at the beginning of cooking, such as stew. “Root” starches, such as potato, tapioca, and arrowroot, should be used if you need to thicken a sauce quickly, right before taking it off the stove.

As you can see, different starches will contribute different things to add to your cooking and baking. Often, my recipes will call for a combination of starches so that you reap all the benefits—for example, a combination of tapioca starch (which will result in golden-brown baked goods) and potato starch (which will add a nice light texture to baked goods).

For more gluten free recipes and tips, sign up for the Gluten Free Bread once a week emails below!

Filed Under: Baking Tips, GF Ingredients, Gluten Free FAQs, Gluten Free Flours Tagged With: arrowroot, cornstarch, gluten free starches, potato starch, tapioca starch

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Comments

  1. John & Mary Giles

    February 19, 2020 at 3:54 pm

    What is the best gluten-free bread that is safe for a diabetic? We have found Erythritol blend all natural sweetner. It has no white sugar, is a mild sugar alcohol derived from fruits & plants. A large number of people claim (on the internet) it tastes just like white sugar. Do you think your oat flour recipe should be the first one to try for diabetics? Would tea biscuits also work as well? Maybe you may suggest a different bread recipe to try, too?

    Reply
    • Christine

      February 19, 2020 at 8:30 pm

      Hi!

      So yes, there are some good sugar substitutes out there that will work for you. Have you looked into Swerve? I use Swerve in this bread: https://zestforbaking.com/gluten-free-bread-machine-cinnamon-raisin-bread. I use it because it's a cup for cup substitute and I myself have been avoiding refined sugar so it's the perfect sweetener for my recipes.

      But either way, most of my recipes will work with a cup for cup sugar substitute.

      Hope that helps!

      ~Christine

      Reply
  2. June

    August 20, 2020 at 10:50 pm

    I am allergic to corn. Which starch would you substitute for cornstarch in your GF flour mix? This is a wonderful resource! Thank you so much!

    Reply
    • Christine

      August 24, 2020 at 1:35 pm

      Hi June,

      Thanks! So I've experimented with using arrowroot starch in place of cornstarch and it seems to work very well.

      Hope this helps!

      ~Christine

      Reply
  3. RitaRidpath

    April 10, 2022 at 4:30 pm

    I need potato starch for a flourless brownie but I only have potato flour. I also have arrowroot and cornstarch. If I sub in one of these how much baking powder or soda should I use? My recipe does not call for either powder or soda.

    Reply
    • Christine

      April 10, 2022 at 5:17 pm

      Hi,

      So just use the cornstarch - no baking powder or soda added. Potato flour is not the same as the starch, so avoid that one, but the cornstarch should work just fine!

      Christine

      Reply

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Hi, I'm Christine, a gluten free baker living in sunny Texas! Zest for Baking is where you'll find gluten free (and dairy free) recipes, tips for substituting ingredients and help navigating the world of gluten free baking.

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Since 2013, Christine has been creating delicious gluten free baking recipes that no one would guess are actually gluten free. Her Zest For Baking recipes have been featured on The Daily Meal, Bloglovin' and Dr. Axe, to name a few. When she's not hanging out on Facebook or sharing pictures on Instagram or pinning on Pinterest, you can find her in her kitchen, creating more ZestForBaking.com recipes!

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