How to Feed a 1:1:1 Sourdough Starter Ratio to Make 60g (Same-Day 4 - 5 hrs Peak)
Fast same-day levain build math to make 60g of active starter (100% Liquid) using a 1:1:1 feeding ratio.
A 60g 1:1:1 levain is 20g ripe culture plus 20g flour plus 20g water. Because a 1:1:1 ratio dilutes the previous batch's organic acid hard, this 100% Liquid culture peaks bright and clean in 4 - 5 hrs rather than tasting of vinegar. For a zero-waste routine, build 80g (27g / 27g / 26g) and return 20g to the fridge. Use it for Fast 4–5 hour same-day bake build.
- Exact 60g Build
- 20g : 20g : 20gStarter : Flour : Water (1:1:1)
- 60g + 20g Jar Reserve
- 27g : 27g : 26gBuilds 80g total (0g discard waste)
- Estimated Peak Window
- 4 - 5 hrsAt 74°F–76°F (23.5°C–24.5°C)
- Levain Hydration
- 100%Fast 4–5 hour same-day bake build
Zero-Discard 1:1:1 Starter Math at 60g (20g : 20g : 20g)
Weights derived from the 3-part 1:1:1 division, where one part equals 20.0g.
| How Much to Make | Starter (1 Part) | Flour (1 Parts) | Water (1 Parts) | Peak Hours (75°F) |
|---|---|---|---|---|
| 40g 1:1:1 levain [Exact Build] | 13g seed culture | 13g flour | 14g water | peak 4 - 5 hrs |
| 60g 1:1:1 levain Slightly Leaner | 20g seed culture | 20g flour | 20g water | peak 4 - 5 hrs |
| 80g 1:1:1 levain Slightly Fuller | 27g seed culture | 27g flour | 26g water | peak 4 - 5 hrs |
| 50g 1:1:1 levain Much Leaner | 17g seed culture | 17g flour | 16g water | peak 4 - 5 hrs |
| 70g 1:1:1 levain Much Fuller | 23g seed culture | 23g flour | 24g water | peak 4 - 5 hrs |
Interactive Starter Feeding Ratio × Target Weight Calculator
Compare your exact mixing bowl dimensions, flour protein percentage, or discard weight in real time.
Fast Same-Day Kinetics: Why a 1:1:1 Ratio Peaks in 4 - 5 hrs (60g Build)
Because the 60g build holds only 20g of live culture, the 20g of flour and 20g of water must supply everything the yeast needs to reach a 4 - 5 hrs peak. Underfeeding therefore produces a sour levain, while a correctly fed 1:1:1 jar domes within hours.
Flour choice shifts the timeline more than most bakers expect. At 1:1:1 with 20g of flour, a malted bread flour peaks faster and sweeter than an unmalted one, because the added amylase liberates more maltose per minute and the culture simply runs out of substrate sooner.
Zero-Discard Scraping Method for 60g Levain (1:1:1)
- Feed at the Right Moment: For fast 4–5 hour same-day bake build, begin the 1:1:1 feed 4 - 5 hrs before you plan to mix dough.
- Mix 27g Seed, 27g Flour, 26g Water: Combine everything in the jar and swirl until the flour is fully hydrated.
- Cover and Rest (4 - 5 hrs): Keep the jar at 75°F, ideally inside a proofing box, until the culture peaks.
- Use 60g and Keep 20g: The levain goes into your dough at full stretch; the reserve becomes the next cycle's 1:1:1 seed.
Frequently Asked Questions for This Starter Feeding Ratio × Target Weight Spec
What is the real difference between 1:1:1 and a 1:1:1 feed?
A 1:1:1 feed keeps one third of the batch as seed and peaks fastest; 1:1:1 keeps one 3th, so it ripens more slowly but with far less inherited acidity.
How long does a 1:1:1 refreshing take to peak?
At 75°F (24°C) the culture domes in 4 - 5 hrs; a cooler room adds roughly 3.8% for every degree below that.
Does the 60g figure include the jar remnants?
No. 60g is the usable levain you take out of the jar; the jar build is 80g so that 20g of culture always survives the transfer.