How to Use 120g (0.50 Cups) Sourdough Discard in Chewy Sourdough Discard Bagels
Zero-waste baker's math to fold 120g of unfed sourdough discard into chewy sourdough discard bagels without making the batter gummy or runny.
The arithmetic behind 120 g of discard: divide the weight by 1.5 to get the 60g of flour hiding inside it, and the difference (60g) is the water it carries. Apply both to chewy sourdough discard bagels and you land on 440g of fresh flour and 225g of warm water, leavened with 0.6g soda and finished at Boil 60s + 425°F for 20 min.
- Subtract Recipe Flour
- -60gUse 440g instead of 500g
- Subtract Warm
- -60gUse 225g instead of 285g
- Acid-Neutralizing Soda
- 0.6gReacts with discard lactic acid for CO2 lift
- Cook / Bake Spec
- Boil 60s + 425°F for 20 minBoil 60s + 425°F for 20 min
Flour, Liquid & Soda Deductions for 120g of Discard in Chewy Sourdough Discard Bagels
Neighbouring discard weights around 120g, useful when your jar remnant is larger or smaller than planned.
| Discard Hydration % | Flour Carried In | Water Carried In | Fresh Flour Needed | Fresh Warm Water Needed | Bicarbonate Buffer |
|---|---|---|---|---|---|
| Discard 120g (50% hydration) [Anchor] | flour inside 80g | water inside 40g | use 420g fresh flour | use 245g Warm Water | soda 0.6g |
| Discard 130g (100% hydration) 50% Hydration | flour inside 65g | water inside 65g | use 435g fresh flour | use 220g Warm Water | soda 0.7g |
| Discard 110g (125% hydration) 75% Hydration | flour inside 48.9g | water inside 61.1g | use 451.1g fresh flour | use 223.9g Warm Water | soda 0.6g |
| Discard 140g (75% hydration) 125% Hydration | flour inside 80g | water inside 60g | use 420g fresh flour | use 225g Warm Water | soda 0.7g |
| Discard 100g (100% hydration) Standard 100% | flour inside 50g | water inside 50g | use 450g fresh flour | use 235g Warm Water | soda 0.5g |
Custom Batch Recalculation Engine
Fine-tune starter hydration between 50% stiff and 125% liquid while keeping your sourdough discard gram converter ratios locked.
Food Chemistry: Why 120g of Unfed Discard Improves Chewy Sourdough Discard Bagels
Hydration is the variable most discard recipes ignore. Adding 120g of 100% hydration discard to a 500g flour base contributes 60g of water, so the effective hydration of the finished batter is not 57% at all — it is the ratio of 225g liquid to 440g dry flour.
Practical sequencing beats perfect chemistry here. Weigh everything first, mix the wet ingredients including the 120 grams of discard, rest ten minutes for the 0.6g of soda to react, then fold in the 440g of sifted flour just before cooking at Boil 60s + 425°F for 20 min.
How to Mix Chewy Sourdough Discard Bagels with 120g Sourdough Discard
- Recalculate the Salt: Your 120 g of discard was salted when it was last fed, so use slightly less salt than the original chewy sourdough discard bagels recipe calls for.
- Mix Discard into Flour (440g): Toss 440g of flour with the 120 g of discard until every lump is coated.
- Add Liquid Gradually (225g): Pour in 225g of warm water a little at a time until the batter comes together.
- Add 0.6g Soda and Cook: Stir in the bicarbonate, let it foam briefly, then take the chewy sourdough discard bagels to Boil 60s + 425°F for 20 min.
Technical Q&A: How to Use 120g (0.50 Cups) Sourdough Discard in
Will 120g of discard make chewy sourdough discard bagels taste sour?
Only if the acid is left un-neutralised. The 0.6g of bicarbonate reacts with the roughly 2g of acid inside 120g of discard, converting it to mild sodium salts and leaving a pleasant background tang.
Why is my chewy sourdough discard bagels spreading more than the original formula after adding discard?
Almost always because the 60g of water inside 120g of discard was not deducted. Correct the liquid to 225g, and brown the butter or add an extra fat to lock the remaining moisture.
How long should I rest the chewy sourdough discard bagels batter after mixing in discard?
Ten minutes is the sweet spot at room temperature. It lets the 0.6g of bicarbonate finish neutralising the discard's acid while the 440g of flour hydrates around the 225g of liquid.