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The goal
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waste, use every gram
Sourdough · Nothing wasted
What to do with sourdough discard.
Every feed leaves you with leftover starter. Do not bin it. Here is what discard actually is, whether it is safe, how to fold it into a recipe, and the best things to make with it.
What it is
Discard is just unfed starter
Every time you feed a sourdough starter, you remove some first so the culture is not overwhelmed by its own acidity. That removed portion is the discard. It is perfectly good flour and water with a lovely tang, it just is not lively enough to raise a loaf on its own, which is why it goes into recipes that do not depend on it for rise.
Treated well, discard is a free ingredient rather than a waste product. It keeps for a week or two in the fridge, it adds flavour and tenderness, and once you get into the habit you will find yourself keeping a jar of it on purpose.
Using it in a recipe
How to fold discard into a bake
Discard carries both flour and water, so dropping it into a recipe changes the balance. The fix is simple arithmetic, or you can let the discard calculator tell you exactly what to subtract.
- 1
Weigh the discard
Weigh what you want to use so you know exactly how much flour and water it contains.
- 2
Split it in half
A 100% hydration discard is half flour and half water by weight. So 200g of discard is 100g flour plus 100g water.
- 3
Adjust the recipe
Reduce the recipe's flour and water by those amounts to keep the dough balanced, then mix as normal.
- 4
Or just add it
For loose batters like pancakes and crackers, balance matters less. Stir it straight in and adjust by feel.
Best useSaturday morning pancakes
What to make
The best things to make with discard
Pancakes & waffles
The classic. Discard, egg, a little sugar and baking soda gives a tangy, tender batter. Best hot off the pan.
Crackers & crispbreads
Spread thin with oil and salt, bake until snapping crisp. A brilliant use for older, more sour discard.
Crumpets
Discard, a splash of milk and a pinch of soda, cooked in rings. Holey, chewy and made for butter.
Flatbreads
Quick pan breads with barely any effort. Great for wraps and dipping, ready in minutes.
Banana bread
A spoon of discard adds moisture and a subtle tang that balances the sweetness beautifully.
Quick pizza base
Bulk out a same-day dough with discard for extra flavour when you have not planned ahead.
Common questions
Sourdough discard FAQ
Is sourdough discard safe to eat?
Yes, as long as it looks and smells normal. Discard is just unfed starter, so a sour, tangy, slightly boozy smell is fine. Always cook it before eating, since it contains raw flour. Throw it out only if you see pink or orange streaks or fuzzy mould, which mean the culture has spoiled.
How long does sourdough discard keep?
Kept in a sealed jar in the fridge, discard keeps for one to two weeks. It gets more sour over time as the acids build up, which is fine for savoury bakes. Stir in any liquid that separates on top, and if you want to keep it longer, freeze it in portions and thaw when you need it.
Do I need to cook sourdough discard?
Yes. Discard contains raw flour, which should never be eaten uncooked, and it is not leavened, so it will not rise on its own. Use it in recipes that are baked, fried or griddled, and add a raising agent like baking powder or soda if you want lift, as in pancakes or crumpets.
What can I make with sourdough discard?
Loads. Pancakes and waffles, crackers and crispbreads, crumpets, flatbreads, banana bread, and even the base of a quick pizza. Discard adds a gentle tang and helps texture, so it works best in recipes where a little sourness is welcome rather than delicate sweet bakes.
How do I stop producing so much discard?
Keep a smaller starter. If you only bake once a week, you do not need a big jar of it. Maintain as little as 20 to 30g, feed it in proportion, and you will barely discard anything. Storing the starter in the fridge and feeding it less often cuts the waste further still.
Keep reading
Where to go next
Turn discard into something good.
The free discard calculator tells you what your leftovers are worth in flour and water. Save your recipes in DoughRise Pro.
Photography by Anna Zaro and Sara Dubler on Unsplash.
