Why This Technique?
Restores microbial activity and rebalances yeast and bacteria after dormancy so the starter reliably leavens bread.
A refrigerated or neglected starter has reduced yeast and bacterial populations and altered acidity. Systematic feeding rebuilds population size and shifts pH upward temporarily to allow yeast to multiply. Regular refreshment also selects for vigorous strains and restores predictable doubling times essential for scheduling levains and builds [1][2].
🛒 Recommended Products
We recommend the following tools for this recipe:
Digital Kitchen Scale
Essential for accurate measurements when feeding and maintaining starter
Glass Jar for Starter
Clear jar lets you see rise, easy to mark and clean
Jar Spatula
Good for scraping starter and measuring small amounts
Clear Straight-Sided Container
Alternative vessel for larger revivals where a wide profile helps visibility
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When to Use
✓ Suitable for:
- • Starter that has been refrigerated for weeks to months
- • Starter stored at room temperature but with sluggish activity
- • Starter showing liquid 'hooch' but no vigorous rise
✗ Not suitable for:
- • Starter with visible mold (fuzzy, colored growth) → Contamination — discard and start fresh
- • Starter with strong putrid smell (rotten) → Indicates serious spoilage; better to rebuild from a known healthy culture
Step by Step
Day 0 — Choose a working mass: remove about 80–90% of the jar and leave 20–50 g of the most recent starter. This keeps the familiar microbial community while lowering acidity.
Feed 1:2:2 (starter:flour:water by weight). Example: if you keep 25 g starter, feed 50 g flour + 50 g water to total 125 g. Mix thoroughly until no dry flour pockets remain.
Store at a warm spot (24–27°C / 75–80°F is ideal to speed recovery). Mark the jar with a jar spatula or tape to track rise.
After 4–6 hours check for activity. If the starter rises and shows bubbles, proceed to the next feed. If activity is minimal after 8–12 hours, perform another 1:2:2 feed (discard down to 20–50 g again, then feed).
Repeat feeds every 8–12 hours at warm temperatures until the starter reliably doubles within 4–6 hours. This usually takes 2–4 feed cycles, depending on age and storage conditions [1][2].
Once stable doubling is achieved, you can switch back to your usual maintenance ratio (commonly 1:1:1 or 1:2:2 depending on schedule) and refrigerate if not baking daily.
🎬 Video Tutorial
Walkthrough showing feeds, signs of activity, and troubleshooting tips.
Common Mistakes
❌ Feeding too large a ratio (e.g., 1:5:5) immediately
Problem: Dilutes the community and slows visible activity; hides progress
Solution: Start with 1:2:2 and only increase flour if growth is already strong
❌ Working at cold room temperature without adjusting timing
Problem: Extends doubling time and causes repeated unnecessary changes
Solution: Use warmth (24–27°C) or allow more time between feeds; monitor rather than follow strict clock
❌ Using chlorinated or very hot water
Problem: Chlorine can inhibit microbes; hot water can kill them
Solution: Use filtered or rested tap water at 20–25°C
❌ Keeping contaminated containers
Problem: Old residue and poor sanitation invite unwanted microbes
Solution: Start in a clean [glass jar for starter](https://amzn.to/4pWAN8D) or [clear straight-sided container](https://amzn.to/3LROhV5)