How to Use 150g (0.63 Cups) Sourdough Discard in Crispy Discard Pan Pizza Crust
Zero-waste baker's math to fold 150g of unfed sourdough discard into crispy discard pan pizza crust without making the batter gummy or runny.
Because 150g of standard 100% hydration sourdough discard consists of 75g flour and 75g water, adding it to a Crispy Discard Pan Pizza Crust recipe (400g flour + 270g lukewarm water) requires subtracting 75g dry flour and 75g lukewarm water. Your adjusted formula is 150g discard + 325g fresh flour + 195g lukewarm water, plus 0.8g sodium bicarbonate (500°F (260°C) for 12–15 min).
- Subtract Recipe Flour
- -75gUse 325g instead of 400g
- Subtract Lukewarm
- -75gUse 195g instead of 270g
- Acid-Neutralizing Soda
- 0.8gReacts with discard lactic acid for CO2 lift
- Cook / Bake Spec
- 500°F500°F (260°C) for 12–15 min
Zero-Waste Crispy Discard Pan Pizza Crust Math — 150g Discard Decomposed by Hydration
Soda column assumes the balanced 1.2g per 100g of discard dose; halve it for a pronounced tang.
| Hydration Level | Discard Flour Content | Discard Water Content | Remaining Flour | Remaining Lukewarm Water | Soda Neutraliser |
|---|---|---|---|---|---|
| Batch line 170g / 125% [Primary] | hidden flour 75.6g | hidden water 94.4g | keep 324.4g flour | keep 175.6g Lukewarm Water | add 0.9g soda |
| Batch line 150g / 75% Leaner Dough | hidden flour 85.7g | hidden water 64.3g | keep 314.3g flour | keep 205.7g Lukewarm Water | add 0.8g soda |
| Batch line 130g / 100% Wetter Dough | hidden flour 65g | hidden water 65g | keep 335g flour | keep 205g Lukewarm Water | add 0.7g soda |
| Batch line 160g / 100% Tight Dough | hidden flour 80g | hidden water 80g | keep 320g flour | keep 190g Lukewarm Water | add 0.8g soda |
| Batch line 140g / 50% Loose Dough | hidden flour 93.3g | hidden water 46.7g | keep 306.7g flour | keep 223.3g Lukewarm Water | add 0.7g soda |
Interactive Sourdough Discard Gram Converter Calculator
Compare your exact mixing bowl dimensions, flour protein percentage, or discard weight in real time.
Food Chemistry: Why 150g of Unfed Discard Improves Crispy Discard Pan Pizza Crust
Hydration is the variable most discard recipes ignore. Adding 150g of 100% hydration discard to a 400g flour base contributes 75g of water, so the effective hydration of the finished batter is not 68% at all — it is the ratio of 195g liquid to 325g dry flour.
Temperature changes how fast that neutralisation runs. At 75°F (24°C) the 0.8g of bicarbonate reaches the 3g of acid quickly, but in a cold kitchen the reaction stalls and the crispy discard pan pizza crust batter can taste sour even though the maths was right.
How to Mix Crispy Discard Pan Pizza Crust with 150g Sourdough Discard
- Pre-weigh for Accuracy: Set out 150g of discard, 325g of flour and 195g of lukewarm water on the scale before you begin — discard sticks to spoons and misreads badly.
- Blend the Discard Smoothly: Work 150g of discard into the 195g of liquid with a whisk until the mixture is completely uniform, with no visible fermented lumps.
- Fold in Flour & 0.8g Soda: Add the 325g of sifted flour and the bicarbonate, then mix only until no dry patches survive.
- Cook to Spec (500°F (260°C) for 12–15 min): The crispy discard pan pizza crust is ready when the centre springs back and the surface is no longer wet.
Frequently Asked Questions for This Sourdough Discard Gram Converter Spec
Do I still need baking powder if I add baking soda for 150g of discard?
Reduce it. The 0.8g of bicarbonate already produces lift through carbon dioxide release, so halving the original baking powder in the crispy discard pan pizza crust formula prevents a metallic, soapy crumb.
Can I make this recipe with 75g of discard instead?
Halve every weight: 38g of flour and 38g of liquid come out of the base recipe, and you need 0.8g of baking soda.
Can I use a 50% hydration leftover starter instead of 100% in this crispy leftover starter pan pizza crust recipe?
Yes, but the deductions change completely: at 50% hydration, 150g of leftover starter carries 100g of flour instead of 75g, so you would deduct that much more flour and correspondingly less liquid.