What is Sourdough Discard? - Amy Bakes Bread (2024)

FAQs

What is the difference between sourdough bread and sourdough discard bread? ›

Sourdough discard bread combines sourdough discard with either active-dry or instant yeast, resulting in a quicker proofing times. In contrast, sourdough bread relies solely on an active sourdough starter for leavening.

Sourdough discard refers to the excess starter that remains after it doubles in size and begins to fall back down. This term can be deceiving though as “discard” doesn't mean it's unusable or wasted. A better way to think of it is as leftovers.

The fermentation process of the sourdough starter increases the availability of certain nutrients and can help improve digestion. Using the discard in various recipes can add a nutritional boost, especially when combined with whole grains and other healthful ingredients.

The difference is that because sourdough discard is unfed, and you generally use it in recipes that also have a quick leavening agent added, you don't get the long fermentation benefits of discard like you do when using active sourdough starter.

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.

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.

As a general rule, you should throw out a loaf of sourdough bread when it shows visible signs of mold, when it has an unpleasant odor, or when it doesn't taste right. At this point, mold may be contaminating the bread below the surface, even if you can't see it.

Where should I store my jar of sourdough discard? Store your discard in a jar in the refrigerator where it will continue to ferment, albeit very slowly, whereas at room temperature, it will ferment quickly and you will soon have very ripe discard on your hands that won't be useful for much of anything.

#3 Sourdough Flavor, No Flour Added

Similar to case #2, above, discarded sourdough is used in recipes with no additional flour called for, so it can be baked immediately. The discarded starter's flour is already fermented and it adds sourdough flavor to the recipe.

Benefits of using sourdough discard

It adds a slight sour flavor without making them taste too off putting or acidic.

What is the liquid on top of sourdough discard? ›

This thin liquid (called “hooch”) is merely alcohol and water generated by your starter's wild yeast as it feeds. Hooch is a visible cry for help: Your starter is hungry. Once you get it back on a regular regimen of care, it should recover just fine.

If your sourdough starter exhibits any of these signs: - Smells like acetone or vinegar - Has a runny consistency - Is full of tiny bubbles or foaming - Doubles in size and then falls back down - Develops a clear, gray, or black liquid on top - Gets a white, powdery substance on the surface It's time to feed it!

Do I have to discard my sourdough starter? It would be best if you discarded some portion of your starter each time you feed it unless you want to continue to let it grow. Eventually, you need to discard the used “food” (flour and water) that's been used to sustain your starter during the last fermentation period.

You can of course use active sourdough starter in place of discard if you wish. Often active sourdough starter gives a better profile for sweet baked good because it's more milder tasting. Try to treat your sourdough discard as a liquid when adding it to recipes.

Sourdough discard can also be used to start a new sourdough starter. You can gift the discard to a friend looking to start their own sourdough journey; all they need to do is feed it with water and flour to have a thriving starter of their own.