Free Sourdough Pasta & Egg Hydration Tool
Balance sourdough discard water/flour contribution, egg moisture (74% water in whole eggs), and durum semolina absorption for stiff extruded or supple rolled pasta.
🍝 Flour, Starter & Egg Quantities
📊 Total Hydration & Dough Yield
Recommended Tools & Equipment
Tested hardware and components for high reliability
Sourdough Fresh Pasta & Real Egg Moisture Physics
Making pasta with sourdough discard is an Italian culinary tradition that adds rich complex lactic flavor, organic acidity that tenderizes tough durum wheat gluten, and prevents dough graying during storage. However, conventional sourdough bakers often ruin pasta dough because they treat eggs as "100% liquid" when in fact whole chicken eggs are only 74% water!
The Chemistry of Egg Components in Pasta
- Whole Egg (Large ~50g): Contains ~37g water (74%) and 13g proteins and emulsifying fats.
- Egg Yolk (~18g): Contains ~9g water (50%) and 9g rich lecithin fats. Extra yolks impart deep golden color, velvety toothsome "al dente" bite, and chew.
- Sourdough Starter (100% Hydration): Exactly 50% unfermented flour and 50% water by weight. A 100g scoop of discard contributes 50g flour and 50g pure water.
Target Pasta Hydration Ranges
| Pasta Style | Target Hydration % | Dough Texture | Rest / Autolyse Time |
|---|---|---|---|
| Bronze Extruder (Rigatoni) | 46% – 50% | Dry, gravel-like crumbs, no stickiness | 15 – 20 min |
| Hand Rolled (Tagliatelle) | 52% – 56% | Firm, smooth, satin ball, elastic | 30 – 45 min |
| Filled (Ravioli / Tortelli) | 56% – 60% | Supple, moist, seals without egg wash | 45 – 60 min |
Frequently Asked Questions
Why does sourdough discard make pasta dough easier to roll thin?
The organic lactic and acetic acids produced by sourdough fermentation gently relax the strong gluten matrix in durum semolina wheat, preventing the rolled dough sheet from springing back elastically when rolled out with a rolling pin or machine.
Does sourdough pasta need to rise before cooking?
No! Pasta is an unleavened dough. You do not want the dough to rise or develop gas pockets. Rest the dough tightly wrapped in plastic wrap in the refrigerator for 30 to 60 minutes solely to allow the hard semolina starch granules to fully hydrate and the gluten to relax.
How long should fresh sourdough pasta be cooked in boiling water?
Fresh sourdough pasta cooks dramatically faster than dried commercial pasta—typically only 2 to 3 minutes in rapidly boiling salted water (10g salt per liter of water) until floating and tender al dente.