Learn how to make a potato flake sourdough starter. Made with sugar, dehydrated potatoes, and yeast, you can make delicious sandwich bread with a much sweeter taste than its typical sourdough counterpart. 

potato flake sourdough starter ingredients next to a jar of mixed starter with a wooden spoon inside

You know how much I love homemade sourdough bread. Sometimes, though, I do crave a sweeter bread with a little less of that signature sourdough tang and sourness. 

I rarely make yeast breads. So, instead, I decided to make a potato flake starter recipe! This new starter is one of the traditional sourdough starter replacement methods.

Instead of a traditional San Francisco-style starter using flour and water, the potato flake version uses yeast, sugar, water, and dehydrated potatoes. That’s right — dehydrated potatoes! 

This new starter is different from what some know as the Amish friendship bread starter (also known as southern style), although both typically use yeast to get started and include sugar. 

The potato flake version gives bread a sweet taste. That’s why I love to use it on breads like sandwich bread, rolls, or even sweeter baked goods such as cinnamon rolls.

You can even use your potato flake starter discard in any of my discard recipes! This is perfect for anyone that isn’t sold on the sour in sourdough. 

Today, I am going to share with you how I made my potato flake starter and how to properly care for and maintain it.

Plus, I’ve included a beginner bread recipe for you to try once your starter is ready to use! It is a take on my sourdough sandwich bread recipe with a few ingredient swaps and using potato flake starter instead of my regular starter.  

What is a potato flake sourdough starter?

A potato flake sourdough starter is made with dehydrated potato flakes, yeast, sugar, and water. When used in baking, it is what causes your bread to rise. It will give your baked goods a much sweeter taste than a traditional sourdough loaf. This starter is also gluten free and dairy free. 

Note that not all yeast is gluten free. If you are strictly gluten free, you can reference this page to see what yeasts will work for you. A commercial yeast packet โ€“ active dry yeast or instant yeast โ€“ is typically considered gluten free. 

This post contains affiliate links, which means I make a small commission at no extra cost to you. See my full disclosure here.

Why youโ€™ll want a potato flake sourdough starter

A potato flake sourdough starter is fairly easy to maintain. Plus, this type of starter will result in a sweeter and less sour taste in your final product. I like it best in sandwich bread recipes or dinner rolls.

I’ve included a sourdough recipe below that is similar to my regular sandwich bread, but uses a potato flake starter instead! 

aerial view of potato flake sourdough starter sandwich bread cut into slices on a wire rack on a white counter top
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Tips for a sourdough bread starter with potato flakes

  • Unlike your typical sourdough starter made with just flour and water, a potato flake starter will be a lot thinner. Of course, this will affect how much water you add to the recipe. 
  • If your potato flakes settle to the bottom โ€“ that is okay! It likely wonโ€™t stay incorporated, and that is normal. Simply give it a quick stir before use. 
  • Store your potato flake starter in the fridge. I try to feed it once a week to keep it thriving. 
  • If you do not want to make bread, you can discard one cup of the starter before feeding and use it in a sourdough discard recipe. My discard recipes call for traditional sourdough starter, but you can also use a potato flake starter instead. Check out some of those recipes here!

FAQ

Why do you need a starter to make bread?

A sourdough starter replaces the yeast in bread. It is the starter that allows bread to rise. Otherwise, your loaf would turn out flat and dense.ย 

What is the difference between a traditional sourdough starter and a potato flake sourdough starter?

A traditional sourdough starter typically only uses flour and water to both create it and maintain it. A potato flake starter requires sugar, yeast, water, and potato flakes to get it started. To maintain it, you skip the yeast, but will still have to feed it sugar, water, and potato flakes! It tends to give breads a much sweeter taste than regular sourdough bread. If you’d like to learn how to make a traditional sourdough starter, click here!ย 

How does the flavor of traditional sourdough bread and potato flake sourdough bread differ?ย 

It is sweeter and less sour.

How long will the starter last?ย 

Indefinitely, as long as you continue to maintain/feed it!

potato flake sourdough starter ingredients lined up with an empty glass jar and measuring spoons on a white counter

Potato Flake Starter Ingredients 

This recipe will use potato flakes, sugar and commercial yeast to get it going. After it gets established, the wild yeasts will take over, and you will only have to feed it potato flakes, sugar and water.

1 cup warm water

1/4 cup sugar

1 package dry yeast (2 1/4 teaspoons)

3 tablespoons instant potato flakes

Tools to help you get started

Glass container/jar or large bowl

โ€‹Wooden spoon

Tea towelย 

aerial view of a potato flake sourdough starter on a white counter top

How to make a potato flake sourdough starter

  1. Start with a clean glass container or a large bowl.
  2. Add in the warm water, potato flakes, sugar and yeast.
  3. Stir everything together and scrape down the sides.
  4. Cover with something that is slightly breathable. You can use a tea towel or coffee filter with a rubber band. I like to use a flip top canister with the rubber gasket taken out or a glass jar with a glass lid. Both of these are not airtight, so the gasses (which are a natural bi product of fermentation) can escape.
  5. Leave it at room temperature for 4 days, stirring daily.
  6. On the 5th day, feed the starter with 1 cup warm water, 1/4 cup sugar and 3 tablespoons of instant potato flakes. Stir it well and allow it to sit at room temperature for 8 hours.
  7. Remove 1 cup of the starter to make your bread. Place the remaining starter in the refrigerator. (see instructions below to maintain for future use.)

How to maintain a potato flake sourdough starter

You maintain a potato flake sourdough starter a lot like you maintain a regular one, except you use different ingredients! 

We used a package of commercial yeast to jumpstart this process originally, but you will not need it to maintain your starter.

Maintenance Ingredients

1 cup warm water

1/4 cup of sugar

3 tablespoons instant potato flakes

A glass jar of potato flake sourdough starter with a grain mill and eggs in the background on a white counter top

Step-by-step instructions for maintaining your starter

Remove your starter from the refrigerator, and feed it with 1 cup of warm water, 1/4 cup sugar and 3 tablespoons of instant potato flakes. Allow it to sit at room temperature for 6 hours, or until it looks bubbly and active. 

Remove 1 cup of the starter to make potato flake sourdough starter bread. Put it back in the refrigerator until you want to repeat this process and make another loaf of bread.

Storing your potato flake starter in the refrigerator 

Just like with a regular sourdough starter, you can store it in the refrigerator for several weeks in between uses, but it stays most active if you feed it regularly. Aim for once a week. 

If you do not want to make bread, you can discard one cup of the starter before feeding and use it in a sourdough discard recipe. My discard recipes call for traditional sourdough starter, but you can also use a potato flake starter instead. Check out some sourdough discard recipes here. 

How to use your potato flake sourdough starter to make bread 

Two golden brown loaves of sourdough bread using a potato flake sourdough starter. Both loaves are in tin loaf pans on a white counter top

Ingredients

1/2 cup butter (softened) or coconut oil (113 g)– Use coconut oil if you are making this dairy-free or simply like more of a coconut taste. 

1/2 cup sugar (96 grams) 

1 tbs salt (17 grams) โ€“ I use a tablespoon salt, and prefer to use sea salt if possible!

1 cup potato flake sourdough starter (275 g), active and bubbly, active and bubbly 

2 1/4 cups water (531 g) 

8 cups all purpose flour (1200 g)

Tools you may need

Stand mixer

Measuring cups and spoons (or a kitchen scale)

9.5 in by 5 in Loaf pans 

Directions:

An aerial view of a stand mixer kneading dough for potato flake starter sourdough sandwich bread

Mix ingredients 

Add all of the ingredients to a stand mixer. I recommend adding the flour last. This way you can add more or less as needed, pending your starters hydration level. 

Knead the dough

Turn on your stand mixer and knead the dough until it is stretchy and smooth. It will take about 10 minutes. When it is ready, it will pull away from the sides of the bowl and be elastic and smooth. 

Make sure it passes the windowpane test! Grab a small ball of the dough and stretch it into a square. It should stretch thin enough to see through without breaking. 

Bulk Rise 

In a warm place, allow your dough ball to bulk rise for 10-12 hours. You can go longer if you want the benefit of the fermentation. However, donโ€™t overproof! It will turn your dough into a sloppy mess. 

Shape and rise 

Prepare two loaf pans by either greasing them or adding pieces of parchment paper. 

Two balls of potato flake sourdough starter sandwich bread on a white counter top with a stainless steel mixer bowl in the background

Divide dough into two equal parts. 

One loaf pan of potato flake sourdough starter sandwich bread with another dough ball being shaped and prepared for a loaf pan

To shape your dough, roll it out flat into a rectangle and then roll it up. 

Potato flake sourdough starter sandwich bread rolled up and shaped on a white counter top with another loaf in the tin loaf pan in the background

Allow to rise again for 2- 4 hours at room temperature or until doubled. The amount of time all depends on the temperature of your home. 

Two loaves of potato flake sourdough starter rising in stainless steel loaf pans on a white oven

Bake

Optional: Add an egg wash on top of the loaves before baking. This provides more browning. 

Bake at 375 for 45 minutes, or until golden on top.

Allow to cool completely before slicing.

Tow loaves of potato flake sourdough starter sandwich bread cooling on a black wire cooling rack.

Check out more sourdough resources and recipes!

If you try this recipe and love it, I would love it if you gave it 5 stars! Thank you! Tag me on Instagram @farmhouseonboone.

Potato Flake Sourdough Starter

4.60 from 88 votes
Learn how to make a potato flake sourdough starter made with sugar, dehydrated potatoes, and yeast.
Prep: 20 minutes
Cook: 45 minutes
Additional Time: 16 hours
Total: 17 hours 5 minutes
Servings: 24
Slices of potato flake sourdough starter sandwich bread on a wire rack
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Ingredients 

  • 1 cup warm water
  • 1/4 cup sugar
  • 1 package dry yeast, 2 1/4 teaspoons
  • 3 tablespoons instant potato flakes

Instructions 

  • Start with a clean glass container or a large bowl.
  • Add in the warm water, potato flakes, sugar and yeast.
  • Stir everything together and scrape down the sides.
  • Cover with something that is slightly breathable. You can use a tea towel or coffee filter with a rubber band. I like to use a flip top canister with the rubber gasket taken out or a glass jar with a glass lid.
  • Both of these are not airtight, so the gasses (which are a natural bi product of fermentation) can escape.
  • Leave it at room temperature for 4 days, stirring daily.
  • On the 5th day, feed the starter with 1 cup warm water, 1/4 cup sugar and 3 tablespoons of instant potato flakes. Stir it well and allow it to sit at room temperature for 8 hours.
  • Remove 1 cup of the starter to make your bread. Place the remaining starter in the refrigerator.

Maintaining The Starter

  • Remove your starter from the refrigerator, and feed it with 1 cup of warm water, 1/4 cup sugar and 3 tablespoons of instant potato flakes.
  • Allow it to sit at room temperature for 6 hours, or until it looks bubbly and active.
  • Once bubbly, it can be used in bread recipes.
  • Keep stored in the fridge between uses. Feed every 3-5 days

Notes

  • Unlike your typical sourdough starter made with just flour and water, a potato flake starter will be a lot thinner. Of course, this will affect how much water you add to the recipe.ย 
  • If your potato flakes settle to the bottom โ€“ that is okay! It likely wonโ€™t stay incorporated, and that is normal.ย  Simply give it a quick stir before use.ย 
  • Nutrition

    Calories: 16kcal | Carbohydrates: 4g | Protein: 0.3g | Fat: 0.04g | Saturated Fat: 0.01g | Polyunsaturated Fat: 0.003g | Monounsaturated Fat: 0.01g | Sodium: 2mg | Potassium: 23mg | Fiber: 0.2g | Sugar: 2g | Vitamin A: 0.2IU | Vitamin C: 1mg | Calcium: 1mg | Iron: 0.03mg

    Nutrition information is automatically calculated, so should only be used as an approximation.

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    4.60 from 88 votes (67 ratings without comment)

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    286 Comments

    1. Phyllis Runyan says:

      I just realized what l did wrong!!! I just fed my potato flake starter and instead of 1/4c sugar, l added 3/4c of sugar!! Did l ruin my starter?

      1. Lisa Bass says:

        That is a lot of sugar. I would pour out most of the potato flake starter and feed it again with the proper measurements.

    2. Rachel Landfair says:

      Hello, I have a potato starter from a friend. I have had it for a while and as you know it continues to grow in volume even after removing 1 cup as discard. Is it possible once its large enough to remove 2 cups or do I risk killing it? I feel like I would still have more than 1 cup of starter after removing two cups which is the amount I share with friends.

      1. Lisa Bass says:

        Yes, you should be able to remove some.

    3. Jackie Gillespie says:

      Good morning! I have a question, my first use of my potato flake starter was terrific! When I put it in the refrigerator after use, I stirred it every day. Then when I went to make bread with it again, the bread rose some but not like before. I was wondering if my starter is too cold in the fridge or am I doing something wrong…it has separated and it does bubble when I feed it. The bread’s not rising… thanks for your help!

      1. Lisa Bass says:

        Yes, you probably need to feed it again before baking with it and make sure it’s nice and active!

    4. Emelie says:

      Hi Lisa, what are the health differences for bread made with this sourdough starter vice bread made with a traditional sourdough starter?

      1. Lisa Bass says:

        The biggest difference between a potato flake starter and a regular sourdough starter is that this is gluten free, so it’s a benefit for those who cannot tolerate gluten at all. A potato flake starter also produces a softer crumb and have a sweeter sourdough taste.

    5. Bug says:

      How often can you feed the potato flake starter? Can you over feed it? Iโ€™m just trying to see how often I can use it and feed it

      1. Lisa Bass says:

        You need to feed it daily before it becomes active. Once it is active, then you can keep it in your refrigerator and just feed it before you want to use it in a recipe.

        1. Penny says:

          Good morning. So a friend gave me a potato flake starter. I have never done this. The potato flakes are at the bottom of the jar. Do I pour the liquid off and make bread or mix it up then make bread or feed it. Iโ€™m not sure what to do. Please Help before I kill it. ๐Ÿ˜ณ

          1. Lisa Bass says:

            I would pour a bit of the liquid off, stir it, and then feed it! After that you should be able to use it.

    6. Bailee says:

      Hello! I’m so glad I found this page! This sounds doable for me. But I do have a question. To make the bread gluten free can I continue with potato flour or would the flour have to be an all purpose gluten free flour?

      1. Lisa Bass says:

        I have better luck with an AP Gluten Free flour. You can try the potato flour! Let me know how that goes.

    7. Kim says:

      Can you share what kind of loaf pans you have pictures? Where you got them? They look like stainless steel ๐Ÿคทโ€โ™€๏ธ. Thanks in advance!

      1. Lisa Bass says:

        I got them from Amazon!

    8. Victoria says:

      I made the starter as you said and I am afraid that if looks weird looks somewhat separated

      1. Lisa Bass says:

        I would try discarding some of it and feeding it again. Usually that just means it’s hungry and wants to be fed more flour/water.

    9. Ellen Donaldson says:

      If I am making bread and use 1 cup of starter in my recipe, do I need to feed my starter again before I put it back in the fridge?

      1. Lisa Bass says:

        You don’t have to! You can just put it back in the refrigerator and feed it again before you pull it back out.

    10. Laura says:

      Hello! Im so happy to have found this starter, i used to have one a few years back but i lost it, also lost the recipe to make the bread. Could you please share yours with me? TIA

      1. Lisa Bass says:

        Glad to help! Are you looking for a particular bread? The potato bread with this starter is located within the blog post.