How to Use 75g (0.31 Cups) Sourdough Discard in Crispy Discard Pan Pizza Crust
Got a small 75g jar remnant? Exact flour and liquid deductions to fold 75g of unfed discard into crispy discard pan pizza crust for tender flavor.
Scale the crispy leftover starter pan pizza crust formula once and you are done: 400g flour minus the 37.5g inside your 75g of leftover starter is 362.5g, and 270g of lukewarm water minus the 37.5g it contains is 232.5g. Add 0.4g of baking soda and cook at 500°F (260°C) for 12–15 min.
- Subtract Recipe Flour
- -37.5gUse 362.5g instead of 400g
- Subtract Lukewarm
- -37.5gUse 232.5g instead of 270g
- Acid-Neutralizing Soda
- 0.4gReacts with discard lactic acid for CO2 lift
- Cook / Bake Spec
- 500°F500°F (260°C) for 12–15 min
Deducting 75g Sourdough Discard in Crispy Discard Pan Pizza Crust Across 50%–125% Starter Hydrations
The 100% hydration row is your primary target; the 50% and 125% rows show how the deduction changes with a wetter or stiffer discard.
| Discard Hydration | Flour Inside Discard | Water Inside Discard | Remaining Fresh Flour | Remaining Lukewarm Water | Baking Soda Buffer |
|---|---|---|---|---|---|
| Batch line 95g / 100% [Your Jar] | hidden flour 47.5g | hidden water 47.5g | keep 352.5g flour | keep 222.5g Lukewarm Water | add 0.5g soda |
| Batch line 75g / 50% One Step Down | hidden flour 50g | hidden water 25g | keep 350g flour | keep 245g Lukewarm Water | add 0.4g soda |
| Batch line 55g / 75% One Step Up | hidden flour 31.4g | hidden water 23.6g | keep 368.6g flour | keep 246.4g Lukewarm Water | add 0.3g soda |
| Batch line 85g / 125% Two Steps Down | hidden flour 37.8g | hidden water 47.2g | keep 362.2g flour | keep 222.8g Lukewarm Water | add 0.4g soda |
| Batch line 65g / 100% Two Steps Up | hidden flour 32.5g | hidden water 32.5g | keep 367.5g flour | keep 237.5g Lukewarm Water | add 0.3g soda |
On-Bench Hydration & Fermentation Adjuster
Modify base flour mass, levain inoculation, or ambient kitchen temperature below to recalculate from this -37.5g baseline.
Why Even a Small 75g Sourdough Discard Addition Tenderizes Crispy Discard Pan Pizza Crust
The acid load arrives with the flour, not the water. Roughly 2 grams of lactic and acetic acid ride along inside 75g of leftover starter, and that is exactly why 0.4g of sodium bicarbonate belongs in the formula: it converts those acids into their much milder sodium salts while releasing the CO2 that lifts the batter at 500°F (260°C) for 12–15 min.
The discard's own flour carries salt with it. Expect the 362.5g of fresh flour in your crispy discard pan pizza crust recipe to need slightly less salt than the original formula, because the 75 grams of discard was itself salted when it was last fed.
How to Mix Crispy Discard Pan Pizza Crust with 75g Sourdough Discard
- Weigh the Discard Exactly (75 grams): Measure on a digital scale rather than by volume — 0.31 cups of discard varies wildly in hydration depending on how it was last fed.
- Make the 232.5g Liquid Blend: Combine 232.5g of lukewarm water with the melted fat and any eggs specified by the crispy discard pan pizza crust recipe.
- Incorporate 75 grams of Discard: Whisk the discard into the liquid blend until the colour is completely uniform and no pale streaks remain.
- Add 362.5g Flour and Bake: Fold in the sifted flour with 0.4g of soda, rest, and cook at 500°F (260°C) for 12–15 min.
Common Scaling & Troubleshooting Questions (-37.5g)
Can I freeze crispy discard pan pizza crust made with 75 g of discard?
Yes, and discard actually freezes well because the pre-fermented flour is already partly broken down. Mix to the point of combining, then freeze without the bicarbonate so the acid and base do not react before you bake.
Can I use 75g of active bubbly starter instead of unfed leftover starter for crispy leftover starter pan pizza crust?
Yes. Active starter and unfed leftover starter carry the same hydration by weight (37.5g flour + 37.5g water), though active starter will also begin proving the batter. Always measure 75g on a digital scale rather than by cup volume (0.31 cups).
Do I still need baking powder if I add baking soda for 75g of leftover starter?
Reduce it. The 0.4g of bicarbonate already produces lift through carbon dioxide release, so halving the original baking powder in the crispy leftover starter pan pizza crust recipe prevents a metallic, soapy crumb.