1:3:3 Sourdough Starter Feeding Chart to Make 200g Levain (29g : 86g : 85g)
Balanced mid-ratio baker's math to build 200g of active levain (100% Liquid) for an 8 - 10 hrs ripening window.
A 1:3:3 feed for 200 grams splits the jar into 7 equal units of 28.6g — 29g ripe seed, 86g fresh flour, 85g water. Those three weights total exactly 200 grams, and the culture reaches a full dome in 8 - 10 hrs at 75°F. Building 220g instead (31g / 94g / 95g) leaves the 20g jar reserve so nothing is ever thrown away. Best for: 8–10 hour overnight counter build (cool room).
- Exact 200g Build
- 29g : 86g : 85gStarter : Flour : Water (1:3:3)
- 200g + 20g Jar Reserve
- 31g : 94g : 95gBuilds 220g total (0g discard waste)
- Estimated Peak Window
- 8 - 10 hrsAt 74°F–76°F (23.5°C–24.5°C)
- Levain Hydration
- 100%8–10 hour overnight counter build (cool room)
Reference Table: 1:3:3 Ratios at 200g and Its Neighbours
Every row recalculates the 1:3:3 ratio from scratch so the seed, flour and water columns stay internally consistent.
| Levain Yield to Build | Seed Culture (1 Part) | Added Flour (3 Parts) | Added Water (3 Parts) | Ripening Window at 75°F |
|---|---|---|---|---|
| Levain build 200g ([Baseline]) | 29g cultured seed | 86g sifted flour + 85g liquid | zero-waste reserve 20g | 8 - 10 hrs dome window |
| Levain build 210g (Trimmed Read) | 30g cultured seed | 90g sifted flour + 90g liquid | zero-waste reserve 20g | 8 - 10 hrs dome window |
| Levain build 190g (Extended Read) | 27g cultured seed | 81g sifted flour + 82g liquid | zero-waste reserve 20g | 8 - 10 hrs dome window |
| Levain build 220g (Compact Read) | 31g cultured seed | 94g sifted flour + 95g liquid | zero-waste reserve 20g | 8 - 10 hrs dome window |
| Levain build 180g (Generous Read) | 26g cultured seed | 77g sifted flour + 77g liquid | zero-waste reserve 20g | 8 - 10 hrs dome window |
Dynamic Stoichiometric Workbench (29g : 86g : 85g)
Test custom loaf weights or alternative fermentation schedules directly against the 31g : 94g : 95g benchmark above.
Balancing Yeast Density & Acidity with a 1:3:3 Ratio (200g Levain Build)
Monod growth kinetics explain the 8 - 10 hrs window: the 1:3:3 feed drops the seed fraction to 28.6g per 7 parts, so fermentable sugar concentration sits just above the half-saturation constant for 29g of inoculum. Yeast divides fastest while sugar is plentiful, then slows as the 86g of new flour is exhausted and lactic acid accumulates.
If your culture is sluggish or smells sharply of vinegar, the ratio is usually not the culprit — the culture is. Two consecutive warm 1:3:3 refreshes, each feeding 86g of fresh flour against 29g of tired seed, strip out accumulated acetic acid and restore yeast vigour faster than any other single intervention.
Zero-Discard Scraping Method for 200g Levain (1:3:3)
- Check Room Temperature: Confirm your kitchen is close to 75°F (24°C). At 68°F a 1:3:3 feed stretches toward 8 - 10 hrs of extra ripening, and at 82°F it contracts noticeably.
- Build the 220g Base (31g Seed): Feed your seed culture with 94g of flour and 95g of water at 100% Liquid.
- Watch for the Convex Dome (8 - 10 hrs): The surface should bulge into a smooth pillow and jiggle when gently shaken, not collapse flat.
- Split the Peak (200g Out, 20g Back): Use 200g of the 220g build in your dough and restart the cycle with the 20g that is left.
Key Baker's Math Questions (Exact 200g Build: 29g : 86g : 85g)
Is a 1:3:3 ratio too acidic for a 200g sourdough culture?
No. At 1:3:3 the acid from the previous batch is diluted across 3 parts of flour and 3 parts of water, giving a 100% liquid sourdough culture that tastes clean and mild.
Why is my 1:3:3 starter not doubling?
Usually the seed was neglected in the refrigerator. Two warm 1:2:2 refreshes at 76–78°F, each with 86g of fresh flour, will strip the acid and restart the yeast.
What is the real difference between 1:3:3 and a 1:1:1 refresh?
A 1:1:1 refresh keeps one third of the batch as seed and peaks fastest; 1:3:3 keeps one 7th, so it ripens more slowly but with far less inherited acidity.