🍞SourdoughCalc
Starter Feeding Ratio × Target WeightQuantitative Baker's Math Spec (1-6-6-sourdoug)

Overnight 1:6:6 Sourdough Starter Feeding Ratio to Build 50g (12 - 16 hrs Peak Window)

High-dilution overnight levain math to build 50g of sweet, de-acidified starter (100% Liquid) with zero morning collapse.

Executive Baker's Math Summary (Starter Feeding Ratio × Target Weight)

Feed 1:6:6 and you get 4g seed starter, 23g flour and 23g water, adding up to the 50 grams you actually need. That 100% Liquid culture peaks in 12 - 16 hrs at 75°F. Add the 20g buffer and the numbers shift to 5g / 32g / 33g for a 70g jar. Perfect for Warm summer overnight build (77°F–79°F).

Exact 50g Build
4g : 23g : 23gStarter : Flour : Water (1:6:6)
50g + 20g Jar Reserve
5g : 32g : 33gBuilds 70g total (0g discard waste)
Estimated Peak Window
12 - 16 hrsAt 74°F–76°F (23.5°C–24.5°C)
Levain Hydration
100%Warm summer overnight build (77°F–79°F)

50g 1:6:6 Feeding Neighbourhood: Seed, Flour, Water & Peak Window

Every row recalculates the 1:6:6 ratio from scratch so the seed, flour and water columns stay internally consistent.

Levain Yield to BuildSeed Culture (1 Part)Added Flour (6 Parts)Added Water (6 Parts)Ripening Window at 75°F
50g 1:6:6 ([Baseline])seed 4gfresh flour 23groom-temp water 23gpeak 12 - 16 hrs at 75°F
40g 1:6:6 (Trimmed Read)seed 3gfresh flour 18groom-temp water 19gpeak 12 - 16 hrs at 75°F
60g 1:6:6 (Extended Read)seed 5gfresh flour 28groom-temp water 27gpeak 12 - 16 hrs at 75°F
30g 1:6:6 (Compact Read)seed 2gfresh flour 14groom-temp water 14gpeak 12 - 16 hrs at 75°F
70g 1:6:6 (Generous Read)seed 5gfresh flour 32groom-temp water 33gpeak 12 - 16 hrs at 75°F

Live Parameter Solver for Overnight 1:6:6 Sourdough Starter Feeding

Dial in custom baker's percentages and export your adjusted 4g : 23g : 23g formula for bake day.

Open Fullscreen Solver →
Exact 50g Build:
4g : 23g : 23g — Starter : Flour : Water (1:6:6)
50g + 20g Jar Reserve:
5g : 32g : 33g — Builds 70g total (0g discard waste)
Estimated Peak Window:
12 - 16 hrs — At 74°F–76°F (23.5°C–24.5°C)

De-Acidifying Your Culture: Why High-Ratio 1:6:6 Feeds Maximize Oven Spring (50g Build)

A 1:6:6 feed at 50 g is really a statement about how much acid you want to inherit. At 1:6:6, the 3.8g-per-part arithmetic places 4g of already-acidified culture into 23g of virgin flour plus 23g of water, and that dilution ratio governs the final pH of your levain.

Hydration discipline at 100% Liquid means the 23g of water should be room temperature, not hot. Water above 95°F can shock the lactobacilli and stall the 12 - 16 hrs peak, while water below 60°F pushes fermentation into a slow acidifying phase that flattens the eventual rise.

Zero-Discard Scraping Method for 50g Levain (1:6:6)

  1. Check Room Temperature: Confirm your kitchen is close to 75°F (24°C). At 68°F a 1:6:6 feed stretches toward 12 - 16 hrs of extra ripening, and at 82°F it contracts noticeably.
  2. Build the 70g Base (5g Seed): Feed your seed starter with 32g of flour and 33g of water at 100% Liquid.
  3. Watch for the Convex Dome (12 - 16 hrs): The surface should bulge into a smooth pillow and jiggle when gently shaken, not collapse flat.
  4. Split the Peak (50g Out, 20g Back): Use 50g of the 70g build in your dough and restart the cycle with the 20g that is left.

Cereal Chemistry & Bench Execution FAQs

What happens if I use 1:6:6 starter in a very wet dough?

The 100% Liquid sourdough culture carries less acid, so a wet dough keeps more of its elasticity. Hold back a little extra water if your flour absorbs like 23g of bread flour does.

What flour should I use for a 50g 1:6:6 levain?

A 12%+ protein bread flour for the 23g of flour gives a strong levain; adding whole wheat or rye at 20% of that weight speeds it up and adds pleasant acidity.

Can I scale this 50g build up to 100g?

Double every number: 8g starter, 46g flour, 46g water. The ratio, and therefore the 12 - 16 hrs peak, is unchanged.

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