Can I feed my sourdough starter different flour? (2024)

By Melissa Johnson

Breadtopia’s sourdough starter is fed organic bread flour, but you can feed it a different flour if that is your preference. This is also true of starter you’ve made yourself or that a friend gave you. Even if the starter was fed a particular flour since someone’s great-great grandma made it, the microbes will adapt: whole grain vs. refined flour, thinner vs. thicker consistency. You should continue to avoid bleached flour (less wild yeast) and self-rising flour (higher pH).

Can I feed my sourdough starter different flour? (1)

Different starters developed for recipe testing. From left to right: 100% hydration 50:50 bread flour and whole grain rye flour, low hydration whole grain durum flour, 100% hydration whole grain hard red winter wheat flour.

Breadtopia’s starter instructions recommend initially reviving the starter with all purpose or bread flour to more easily track the expansion of the starter and to have a fairly predictable feeding timeline. Refined flour forms a stronger gluten network, so the bubbles are more obviously trapped; and refined flour is consumed a little slower compared with whole grain flour. This is just a recommendation though, and it’s not difficult to monitor whole grain starter expanding in a jar and feed it a little earlier if needed. In general you should feed your sourdough starter close to when it peaks, even if this is earlier or later than when any instructions estimate. At least initially, make sure your starter has a waffle batter consistency and not thinner. Once you’re more experienced at reading your starter, you can try a more liquid starter if you prefer.

By the time you’ve done a few discards and feedings with a new type of flour, the starter will be comprised almost entirely of your new flour. This forum post by one of Breadtopia’s guest bloggers explains how changing the starter’s flour works mathematically over time. Here are a couple of recipes where the sourdough starter has been fed different flours in order to be almost 100% a specific wheat variety:

Whole Grain Spelt Ciabatta
Naturally Leavened Einkorn Bread

Here are two recipes where the sourdough starter has been made stiffer (lower hydration), and the latter recipe has sugar in the starter too, to encourage the flourishing of yeasts that will perform better in sweet dough.

Naturally Leavened Christmas Panettone
Whole Grain Sourdough Date Rolls

Finally, this article describes an experiment with feeding starter different floursand making bread with these starters and the same total flour percentages in the loaves, and this forum thread discusses flour and terroir — the regional specificity — of sourdough starters.

Can I feed my sourdough starter different flour? (2024)

FAQs

Can I feed my sourdough starter a different flour? ›

What Flour Should I Be Feeding My Sourdough Starter With? You can feed your sourdough starter with any flour you like, as long as it provides the starches the wild yeast in your sourdough starter need to convert to Co2 to rise your dough. The flour you choose should always be unbleached flour.

Does it matter what flour you use for sourdough starter? ›

You can create a sourdough starter with any flour in your pantry, though I find it easiest to use a portion of whole-grain rye flour to help speed up the process.

What if I used the wrong flour in my sourdough starter? ›

Also, the type of flour you are using can impede the rise of your starter. All-Purpose flour, for example, will not rise as robustly as a blend of bread flour and whole wheat flour. Different mixtures or types of flour will cause your starter to rise differently. I strongly recommend at least 50% whole wheat flour.

What happens if I feed my starter with bread flour? ›

The best ratio to get things going is 1:1. So for example that would be 50 grams of bread flour, 50 grams of water, and 50 grams of established starter. Bread flour sourdough starters fed 1:1 will usually rise and bubble up in 4-6 hours, then fall back down to look flat.

What happens if I use bleached flour in my sourdough starter? ›

My first attempt at a starter, I accidentally used bleached all purpose flour. That didn't work out very well. The very next day, I had blue spots all over my precious starter. All purpose flour is fine, but I realized that when flour is bleached…it kills off the naturally occurring yeast.

What happens if I use all-purpose flour instead of bread flour in sourdough? ›

Substituting all purpose flour in a sourdough recipe that specifically calls for bread flour is not always an even swap. You'll need to REDUCE the total amount of water first. All purpose flour absorbs less water than bread flour, which can make the dough too sticky to work with otherwise.

What flour makes the most sour sourdough starter? ›

For more tang: Incorporate some rye flour and/or whole wheat flour early in the bread-making process, such as when feeding the mother culture and the preferment. Rye flour in particular will help your culture produce some acetic acid.

How old is the oldest sourdough starter? ›

The World's 'Oldest' Sourdough Starter Was Made With 4,500-Year-Old Yeast. There's no bread quite like sourdough. In addition to being tasty as a sandwich bread, delicious as sourdough croutons, and even great just toasted with butter, sourdough's production process is decidedly unlike other breads.

How soon after feeding sourdough starter can I use it? ›

*Do not try baking with your starter right after feeding it. Allow time for it to grow and feast on the flour before using it. Starters are usually ready to bake with around 4-12 hours after a feeding depending on the amount you feed your starter. The larger the feeding, the more time it needs to ferment.

What can ruin a sourdough starter? ›

Long term lack of feeding at room temperature can absolutely ruin your starter. Contamination: The yeast and bacteria in your sourdough starter are willing and capable of keeping some contamination at bay.

Can I just add flour and water to my sourdough starter? ›

It's a necessary part of the process and ensures that you keep it lean. Add 30g flour + 30g water, stir well, scrape down the sides of the bowl, loosely cover the bowl and leave on the counter, as above. Your starter may be smelling vinegary, that is all normal, it is the fermenting process happening.

What happens if you put too much sourdough starter in your dough? ›

If you have too much starter compared to the additional flour and water you're adding, your hungry starter consumes all the nutrients and then it's not as bubbly.

Is it OK to feed starter with different flour? ›

If you have an established sourdough starter you can use any flour of your choosing! Honestly, I've even used bleached flour on the rare occasion if I'm in a pinch and don't have unbleached flour in our pantry.

What is the healthiest flour for sourdough starter? ›

The best flour blend for creating a new sourdough starter is 50% whole-meal flour (whole wheat or whole rye) and 50% bread flour or all-purpose flour. I recommend a 50/50 mix of whole wheat flour and bread flour.

Can I feed my sourdough starter without discarding? ›

If you don't want to discard sourdough starter daily, scale back your feedings by 1/4 cup amounts. Still feels like you're baking too much? You can further reduce your feedings to a weekly basis if you keep your starter in the fridge rather than on the countertop.

Can old flour affect sourdough starter? ›

short answer, yes, though it takes far longer for AP flour to go bad. I've had dull Bob's Red Mill Dark Rye that smelled fine and was still long before its 'use-by' date screw up my starter (fortunately, the switch to a fresher local brand led to a full recovery.)

Can you convert a regular sourdough starter to gluten free? ›

This is definitely possible. While it would still contain trace amounts of gluten, eventually after enough feeding with gluten free flour, a regular starter would be transformed into a “gluten free sourdough starter.” But, then again may have traces of wheat still contained in the gf starter.

Is sourdough starter equal parts flour and water? ›

Making a starter involves mixing "equal parts flour and water." That's technically for a 100% hydration starter. But starters can exist and thrive at varying hydration levels. For example, you could mix in half as much water to make a 50% hydration starter in the style of an Italian lievito madre.

Can you feed sourdough starter with sprouted flour? ›

Sprouted flour is also great for making sourdough breads. I like to grow my starter using sprouted rye flour and adding sprouted wheat and spelt flour to my dough. A basic French bread recipe using sprouted wheat flour makes great baguettes, rolls, bread sticks, and buns.

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