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How to Substitute for Potato Starch and Potato Flour

By 19 Comments

Don’t be fooled just because potato starch and potato flour both have the word “potato” in them! Find out what and how to substitute for them in your gluten-free baking and cooking.

bowl of potato starch on a wooden counter

Are potato starch and potato flour the same thing?

Potato starch, potato flour – they’re both made from potatoes, so can you alternate one for the other?

Nope. Both are actually very different. 

Potato Starch in a few words 

bowl of potato starch sitting on a white countertop.

Potato starch is made by removing the potato peel, then the potato is made into slurry, which is dehydrated to form the starch. 

Potato starch is very fine, much like cornstarch. 

Potato starch has a rather bland taste, which doesn’t taste overwhelmingly like potato. That makes it good for using in all kinds of recipes, even if you are cooking something sweet.

Potato starch is typically used to make gravies and sauces. It also makes baked goods light and fluffy.

If you do use potato starch in a gravy or sauce, don’t let the liquid boil. This will make it harder for the liquid to thicken.

Potato Flour in a few words

potato flour in a spoon sitting on a wooden cutting board.

Potato flour is a heavy flour and has a strong potato flavor.

Potato flour is made with the whole potato, including the skin. The potatoes may be cooked or left raw. After the potatoes are dried, they are then ground into flour. 

Potato flour, if used correctly, is good for using in breads and rolls. However, it is not usually used as the main flour when baking, because the results can sometimes be gummy and dense. If it is used in smaller amounts it works well to hold together what you are making, though. It absorbs a lot of liquid and works best in small amounts in gluten-free flour blends.

Again, even though the word “potato” is in both products, that doesn’t mean you can successfully substitute one for the other! Potato flour’s heavier weight and strong flavor means it doesn’t substitute well in recipes that call for potato starch—after all, they are really meant for different purposes. So what if you’re right in the middle of cooking and find that you are out of potato flour or starch?

How to Substitute Potato Starch and Potato Flour

potato starch in a bowl next to potato flour in a spoon.

For potato flour:

Unfortunately it’s hard to make a generalization about what will work every time a recipe calls for potato flour. It depends on what you are making.

But the good news is, there are a few basic tips you can follow:

Potato Flour contains .1% protein (very little) and 5.9% fiber (about average). The only gluten free flour that comes close to matching this is arrowroot, which ironically is a starch. It contains 0% protein and 3.1% fiber. 

So this would be a close substitute for potato flour in most recipes.

  • You may have to adjust the moisture in your recipes depending on the flour you use. 
  • If you just can’t seem to get that recipe right and your baked goods consistently come out gummy in the middle, your oven may not be getting as hot as it says it is. The degree of gumminess of what you make can also be determined by different flours—again, if you’re not happy with how your food is coming out, you might need to experiment.

For potato starch:

Starches don’t cause as much trouble as flours do! You have a few starches to choose from besides potato—cornstarch, tapioca, and arrowroot—and they are pretty much interchangeable when you are baking with them. Sometimes even dried potato flakes can be a substitute for potato starch—yes, the kind in the box that you use when you want instant mashed potatoes.

The best brands of Potato Starch and Potato Flour

For Potato Starch, I really like Anthony’s Organic Potato Starch. It’s super light and I like that it’s organic. At about $12 for a 2 lb. bag, it will last a long time.

For Potato Flour, I use Bob’s Red Mill. It’s around the same price as the potato starch and seems to be readily available in most grocery stores.  

Here are some amazing recipes that use potato starch and potato flour:

And here are some tips for gluten free baking:

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Reader Interactions

Comments

  1. Annette Baker

    Do you or anyone have a fool-proof recipe for making gf Norwegian lefse? It typically contains: riced or mashed russet potatoes, a little melted butter & enough flour to roll super thin, almost transparent. My sister makes the best lefse ever, but has yet to be able to roll gf flour mixes. Any tips?

    Thanks,
    Annette

    Reply

    • Christine

      Hi Annette,

      It sounds lovely. I don’t have any tips as it’s not something I’ve attempted before, but I will definitely put it on our list to work on.

      ~Christine

      Reply

      • CAROL JACK

        I Need to substitute a can of cr of potato soup for my hash brown casserole. Any suggestions? We have
        four in our family that has to eat GF. I am
        starting to learn what to do with recipes. Thanks, Carol

        Reply

        • Christine

          Hi Carol,

          Sure, happy to help! So if you need GF cream soup, Walmart has some good options. Or making your own is always an option – Honestly I haven’t made my own before, so I don’t have any tips for that. But Walmart has some good options.

          Hope that helps!

          ~Christine

          Reply

    • Lily

      Hey! I’m of Norwegian descent and have celiacs. I haven’t tried gf lefse, but I would suggest trying sweet white rice flour/mochi flour in a smaller amount that wheat flour. And also, just accepting that they won’t be as thin as regular lefse because gluten is a useful thing. I’d also add like 2 tsp of xanthan gum, which is a lot. I make grain free tortillas (almond and coconut flour and egg mainly) and can roll those out incredibly thin, that’s the amount of xanthan gum in that tortilla recipe, for 8 small or 4 large tortillas.

      Reply

  2. Sarah Trask

    I don’t have a comment, but I’m desperately trying to make my own gluten-free all-purpose flour bix. My problem is that I’m allergic to the following: corn, xanthan gum, guar gum, almonds, chickpeas, all dairy products. I’ve done a lot of research on what can be substituted for cornstarch and potato flour, but what if the gluten-free flout recipe already calls for one the ingredients I’m using as a substitute? Please help!

    Reply

  3. Joel K

    Hi Christine…been searching the internet for a simple conversion of using potato flour instead of 1/2 cup potato flakes (that are difficult to find and/or only come in packages with lots of other unhealthy ingredients). Any suggestions would be appreciated. Thanks kindly.

    Reply

  4. Dianne

    Hi Christine, can I substitute Instant Mash for Potato starch? If so how much Instant mash if recipe says 60 grams of potato starch?

    Reply

    • Christine

      Hi Dianne,

      Unfortunately these are not the same thing. I would not recommend substituting it.

      Wish I had better news but the results would likely not be very good.

      ~Christine

      Reply

  8. Becky

    hi, I’m trying your flour blends, but I can not find potato flour at the stores, do I have to use it in the blend.
    and I can not do dairy or dairy sub, it’s caragreene, I react to, can I use water, thanks so much, Becky

    Reply

    • Christine

      Hi Becky,

      Sure, so if you have arrowroot starch, add that instead of the potato flour. And then for dairy, I had to give up dairy at the beginning of 2020, so I’m gradually converting all my recipes – but most of the time I use almond milk in place of milk and dairy free butter in place of butter and it works beautifully. Hope that helps!

      ~Christin

      Reply

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