Overnight 1:10:10 Sourdough Starter Feeding Ratio to Build 60g (12 - 16 hrs Peak Window)
High-dilution overnight levain math to build 60g of sweet, de-acidified starter (100% Liquid) with zero morning collapse.
Want 60g of active levain and zero waste? Mix 3g of your existing culture with 29g flour and 28g water — a 1:10:10 ratio at 100% Liquid. Fed at 75°F the culture peaks in 12 - 16 hrs and smells sweet rather than sour. Scale up to 80g (4g seed, 38g flour, 38g water) and the extra 20g stays in the jar as tomorrow's seed. Ideal for 16-hour hot-climate / low-acidity artisan levain.
- Exact 60g Build
- 3g : 29g : 28gStarter : Flour : Water (1:10:10)
- 60g + 20g Jar Reserve
- 4g : 38g : 38gBuilds 80g total (0g discard waste)
- Estimated Peak Window
- 12 - 16 hrsAt 74°F–76°F (23.5°C–24.5°C)
- Levain Hydration
- 100%16-hour hot-climate / low-acidity artisan levain
Reference Table: 1:10:10 Ratios at 60g and Its Neighbours
Comparison of 1:10:10 builds either side of 60g, with ripening windows quoted at 75°F (24°C).
| Target Build Weight | Ripe Seed (1) | New Flour (10) | Liquid (10) | Time to Full Dome |
|---|---|---|---|---|
| Levain build 60g ([Target]) | 3g cultured seed | 29g sifted flour + 28g liquid | zero-waste reserve 20g | 12 - 16 hrs dome window |
| Levain build 70g (One Step Down) | 3g cultured seed | 33g sifted flour + 34g liquid | zero-waste reserve 20g | 12 - 16 hrs dome window |
| Levain build 50g (One Step Up) | 2g cultured seed | 24g sifted flour + 24g liquid | zero-waste reserve 20g | 12 - 16 hrs dome window |
| Levain build 80g (Two Steps Down) | 4g cultured seed | 38g sifted flour + 38g liquid | zero-waste reserve 20g | 12 - 16 hrs dome window |
| Levain build 40g (Two Steps Up) | 2g cultured seed | 19g sifted flour + 19g liquid | zero-waste reserve 20g | 12 - 16 hrs dome window |
Dynamic Stoichiometric Workbench (3g : 29g : 28g)
Test custom loaf weights or alternative fermentation schedules directly against the 4g : 38g : 38g benchmark above.
De-Acidifying Your Culture: Why High-Ratio 1:10:10 Feeds Maximize Oven Spring (60g Build)
The acid dilution is asymmetric: dropping from a 1:1:1 feed to a 1:10:10 feed multiplies the flour and water by 10 and 10 while the seed stays fixed, so at 60g the 3g of inoculum is spread across a far larger medium. That is precisely why 100% Liquid starters are prized for 16-hour hot-climate / low-acidity artisan sourdough culture work.
The practical limit of a 1:10:10 feed is handling, not biology. At 100% Liquid the 28g of water against 29g of flour produces a thick paste that clings to a spoon; at 1:1:1 it is a pourable batter. Choose the ratio that suits how you actually stir, not the one that sounds most professional.
Zero-Discard Scraping Method for 60g Levain (1:10:10)
- Zero the Scale and Pre-weigh (4g / 38g / 38g): Set out three vessels and weigh each ingredient before you open the culture jar.
- Bloom the Seed (4g): Add the 4g of ripe seed to 38g of water and stir until the mixture becomes a uniform cloudy suspension.
- Add Flour in Two Pours (38g): Incorporate half the flour, wait 20 minutes for hydration, then work in the remainder so no dry pockets survive.
- Ferment to a Dome (12 - 16 hrs): At 75°F the 1:10:10 culture should double and dome in 12 - 16 hrs; pull 60g at peak and return 20g to the fridge.
Key Baker's Math Questions (Exact 60g Build: 3g : 29g : 28g)
How long can I keep the leftover starter in the fridge?
At 38°F (3°C) the 20g reserve rests indefinitely. Cold slows the culture without stopping it, and the 12 - 16 hrs peak simply arrives sooner once you feed it.
What happens if I use 1:10:10 starter in a very wet dough?
The 100% Liquid levain carries less acid, so a wet dough keeps more of its elasticity. Hold back a little extra water if your flour absorbs like 29g of bread flour does.
Should the water be warm or cold for a 1:10:10 feed?
Room temperature, roughly 70°F (21°C). Hotter water risks shocking the culture, while colder water stretches the 12 - 16 hrs peak considerably.