Sourdough Banana Bread (Starter Discard Recipe) - Umami Girl (2024)

/ Updated Sep 17, 2021 / by Carolyn Gratzer Cope / 3 Comments / This post may contain affiliate links. Learn more.

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Our chocolate chip banana bread has been flying off the shelves worldwide for over a decade. I adapted that recipe into sourdough banana bread — a classic, tender, delicately flavored quick bread that doubles as an easy way to use up sourdough discard (unfed starter).

Sourdough Banana Bread (Starter Discard Recipe) - Umami Girl (1)

Why we love this recipe

The sourdough process has so much to recommend it. But one challenge — especially when you're in the process of creating a new sourdough starter — is using the unfed portion (also called discard) instead of wasting it.

This wonderful, classic-tasting banana bread recipe is a great way to use it. This bread is:

  • Tender
  • Delicately flavored
  • Mixed with a single fork in a single bowl
  • Ready in about an hour

What you'll need

Here's a glance at the ingredients you'll need to make sourdough discard banana bread.

Sourdough Banana Bread (Starter Discard Recipe) - Umami Girl (2)
  • Use extremely ripe bananas. Fresh or frozen and defrosted are both fine.
  • You can use whatever 100% hydration sourdough starter you have. Mine is made with hearty rye flour, and the banana bread still turns out delicate and mild. The purpose of this recipe is to hep use up unfed starter (sourdough discard), but you can also use ripe, bubbly starter. The bread will rise a little more if you do that.
  • If you like, you an add half a cup of chopped walnuts and/or half a cup of chocolate chips.

How to make it

Here's what you'll do to make a great loaf of sourdough banana bread. You can see the steps in action in the video that accompanies this post, and get the all the details in the recipe card below.

Sourdough Banana Bread (Starter Discard Recipe) - Umami Girl (3)
  1. In a large mixing bowl, mash the bananas well. Add the sourdough starter and mix it in. (You can use a fork to mix the whole recipe.)
  2. Stir in the melted butter, then crack the eggs into the bowl and mix until well-incorporated. Stir in the brown sugar and vanilla.
  3. Sprinkle the baking soda and salt evenly over the mix and then tip in the flour. Mix until combined.
  4. Pour batter into a greased, medium-sized loaf pan (see recipe card below for dimensions). Bake in the center of a 350°F oven for about 55 minutes. A tester inserted into the bread won't come out totally clean because of the banana, but it shouldn't be covered with batter.
Sourdough Banana Bread (Starter Discard Recipe) - Umami Girl (4)

Expert tips and FAQs

Can you taste the sourdough in this banana bread?

Honestly? It just tastes like banana bread, with perhaps the slightest bit of additional tang — even though my starter is made from hearty whole grain rye flour. The acidity of the starter contributes to a tender crumb, but since we bake the bread right after mixing, the dough doesn't have a chance to ferment.

What if my starter isn't 100% hydration?

This recipe uses half a cup (112 grams) of 100% hydration starter, which is 56 grams of flour and 56 grams of water. If your starter has a different hydration level, you can do the math. Add enough starter to contribute 56 grams of flour, along with additional water to make up the difference.

How long does sourdough starter banana bread keep?

Once completely cool, this loaf will keep well for three or four days wrapped in foil at room temperature. You can toast slices of it on subsequent days. For longer-term storage, wrap in foil, place into a zip-top freezer bag, and freeze for up to about six months.

More sourdough resources

  • Rye sourdough starter
  • My favorite crackers for using unfed starter
  • Scallion pancakes (discard recipe)
  • The perfect loaf of sourdough rye bread
  • Life-changing sourdough bagels
Sourdough Banana Bread (Starter Discard Recipe) - Umami Girl (5)

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Yield: 12

Sourdough Banana Bread

Sourdough Banana Bread (Starter Discard Recipe) - Umami Girl (6)

Our super-popular banana bread with chocolate chips has been a favorite of many families for over a decade. For times when you have an abundance of unfed sourdough starter, I developed this adaptation to merge the best of all possible worlds.

Prep Time10 minutes

Cook Time55 minutes

Total Time1 hour 5 minutes

Ingredients

  • 1 pound (454 grams) very ripe bananas (3 to 4 large, weighed with skins still on)
  • ½ cup (112 grams) unfed 100% hydration sourdough starter
  • 4 tablespoons (56 grams) butter, melted
  • 2 large eggs
  • ½ cup (100 grams) lightly packed brown sugar
  • 2 teaspoons vanilla extract
  • 1 teaspoon baking soda
  • ¼ teaspoon fine sea salt
  • 1 ¼ cups (150 grams) all-purpose flour

Instructions

  1. Preheat the oven to 350°F with a rack in the center. Grease a medium (8-cup/9 x 5 x 3 inch) loaf pan.
  2. In a large bowl, mash the bananas with a fork.
  3. Mix in the sourdough starter.
  4. Mix in the melted butter.
  5. Crack the eggs into the bowl and mix well.
  6. Add the brown sugar and vanilla and mix with the fork to combine well.
  7. Sprinkle the baking soda and salt over the batter.
  8. Add the flour and mix with the fork until just combined.
  9. Pour the batter into the loaf pan and bake for about 55 minutes, until a tester inserted in the center comes out with only banana on it, not raw batter.
  10. Cool in the pan on a rack for ten minutes, then remove from pan to cool completely.

Notes

  1. You can use refreshed (fed) sourdough starter if you like. The bread will rise a little more.
  2. When possible, it's best to weigh your ingredients for baking. If you don't have a kitchen scale, use the spoon and level method to measure the flour.
  3. If you like, you can add ½ cup chopped walnuts and/or ½ cup chocolate chips to the batter after mixing in the flour.
  4. Once completely cool, store any leftovers at room temperature, wrapped in foil, for up to four days. You can toast slices in subsequent days if you like. For longer-term storage, wrap well in foil, place inside a zip-top freezer bag, and freeze for up to about six months.

Nutrition Information:

Yield:

12

Serving Size:

1

Amount Per Serving:Calories: 127Total Fat: 1gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 1gCholesterol: 31mgSodium: 163mgCarbohydrates: 26gFiber: 2gSugar: 9gProtein: 3g

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More Sourdough

  • Sourdough Scallion Pancakes
  • Sourdough Rye Bread
Sourdough Banana Bread (Starter Discard Recipe) - Umami Girl (11)

About Carolyn Gratzer Cope

Hi there, I'm Carolyn Gratzer Cope, founder and publisher of Umami Girl. Join me in savoring life, one recipe at a time. I'm a professional recipe developer with training from the French Culinary Institute (now ICE) and a lifetime of studying, appreciating, and sharing food. More about me.

Reader Interactions

Comments

  1. Chari says

    Sounds yummy. If I make 3 smaller loaves can you tell me how long they should bake? 46 min.?
    Thanks

    Reply

  2. Julie says

    Can I fix this and let the dough rest in the fridge overnight? To help the starter incorporate?

    Reply

    • Carolyn Gratzer Cope says

      Hi, Julie! There's no need to let the starter incorporate more than it would with a normal mixing process, but you can make the batter in advance if you'd like, as long as you follow a few tips. First, baking soda needs to be added shortly before baking, so don't mix it in until the last minute. Second, the longer the batter rests in the fridge, the more pronounced any sourdough flavor will be. This is especially true if you're using active starter but still applies to a lesser degree with discard. If you follow these guidelines it's fine to let the batter chill overnight, but you'll notice a bit more tang in the final result.

      Reply

Leave a Reply

Sourdough Banana Bread (Starter Discard Recipe) - Umami Girl (2024)

FAQs

Can you do anything with sourdough starter discard? ›

You can always use this discard by directly mixing it into a dough for baking. Your discard, as long as it's in good shape, will leaven any bread dough just as well. The discard is just like a levain you would make for a recipe. The only difference is it's the same makeup as your starter.

What is the difference between sourdough starter and discard? ›

When you feed sourdough starter, you must remove a portion of the starter to make room for the flour and water you're adding to the mixture. Sourdough discard is the portion of starter that gets removed as part of its routine maintenance.

How old is the oldest sourdough bread starter culture around today? ›

Blackley's sourdough starter, created from 4,500 year-old yeast, is considered the oldest sourdough starter, per Oldest. Other starters like the Saint Honoratus Wheat also are quite old. A bakery called Chrissi's Farmhouse Bakery uses it and said, “This noble starter dates back 900 years.

When should you start discarding sourdough starter? ›

After day 7, do I keep discarding half of my sourdough starter? Nope! Once the sourdough starter is established on day 8, all you have to do is just give it flour and water. You no longer need to discard half of it.

What is the best way to use sourdough discard? ›

What to do with sourdough discard? Don't throw it away! Instead, use it to make delicious and nutritious treats like pancakes, waffles, muffins, and bread. Sourdough discard is a great source of natural yeast and flavor, and can add a unique tangy taste to your baked goods.

What happens if you feed sourdough starter without discarding? ›

If you don't get rid of the excess, eventually you'll have more starter than your feedings can sustain. After a few days, your daily 1/4 cup flour and water won't be enough to sustain your entire jar of starter, and your starter will be slow and sluggish, not much better than discard itself.

Can I use an active sourdough starter instead of discarding? ›

Absolutely you can! Active starter can be used in the same way as sourdough discard in sweet or savory baking. You can add active sourdough starter to any recipe you would add discard to following the same calculation.

Why do you throw away sourdough discard? ›

If you don't discard your sourdough starter, it will grow too big and be unmanageable. Not to mention you will go through an unmentionable amount of flour.

How long do you keep sourdough discard? ›

I recommend keeping sourdough discard for up to one week. After that point, there is a higher risk of bad bacteria or mold growing. How often should I feed my sourdough starter? I recommend feeding your starter at least once per week.

Does sourdough starter taste better with age? ›

For most bakers, the answer is a clear no. Maurizio Leo, author of the award-winning bread cookbook The Perfect Loaf, still uses the first starter he ever made; it's now 12 years old. And while he's sentimental about that starter, he says its age doesn't really impact his bread.

What is the mother of sourdough starter? ›

Mother - this is the overall dough culture that lives in a bowl in your fridge. We take portions from it to make our ferments (Starter) for our sourdough recipes. When the mother culture gets low, we add to it (feed it).

What is the best flour for sourdough starter? ›

Over the past decade-plus of baking, I've tested all manner of flour from whole grain wheat to spelt to einkorn, and while they all do work, my preferred flour to use when creating a sourdough starter is whole grain rye flour and white flour (this can be all-purpose or high-protein bread flour).

How can you tell if sourdough discard is bad? ›

How Do You Know if Sourdough Discard Is Bad? Sourdough discard will potentially smell acidic and even like acetone if it's a few days old. While it will smell different to a fed, active starter, it won't smell unpleasant.

Can you use day 1 sourdough discard? ›

Remember, you can't use the discard from your homemade sourdough starter for the first 7 days. You can use sourdough discard in all kinds of sourdough discard recipes, including these no wait sourdough recipes, overnight sourdough discard recipes and sourdough discard recipes that use up a lot of discard.

How long is sourdough discard usable? ›

However, the cool temperatures of the fridge slows down the fermentation process immensely. Therefore, you can store discard indefinitely, but I suggest using discard within 1-2 weeks. Over time, the discard will become more sour-tasting as it continues to ferment and develop lactic acid.

What are the benefits of sourdough discard? ›

Sourdough discard recipes not only reduce waste but also offer health benefits, making them a wonderful addition to a balanced diet. The fermentation process of the sourdough starter increases the availability of certain nutrients and can help improve digestion.

Can you eat straight sourdough discard? ›

You shouldn't eat sourdough discard raw but you absolutely can eat it cooked! This sourdough fried bread uses pure sourdough discard for the dough. Can You Freeze Sourdough Discard? Yes, you can freeze sourdough discard fried or raw.

How to throw away sourdough discard? ›

Method 1: Trash Disposal:
  1. Sealing the Starter: Scoop the sourdough starter into a plastic bag. Ensure the bag is strong enough to contain any potential leaks.
  2. Double Bagging: To prevent odors and leaks, you can double-bag the starter.
  3. Disposal: Throw the sealed bag into your regular trash.
Jul 7, 2023

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