How to Care for Your Sourdough Starter: A Baker’s Journal
There's something deeply human about sourdough — it's ancient, alive, and a little unpredictable. Every baker remembers the joy of seeing their starter bubble for the first time, or the quiet heartbreak when it doesn't. With care and consistency, a good starter can live for years, even decades.
This guide covers how to care for a sourdough starter, the mistakes that kill them, and how to track your progress properly using a baking journal.
1. Understanding your starter
Your starter is a living ecosystem of wild yeast and lactic acid bacteria feeding on flour and water. It's what gives sourdough its tang and its chew.
Think of it as a baking pet: it needs feeding, rest, and a warm place to live.
- Feed once or twice daily if kept at room temperature
- Feed once a week if stored in the fridge
- Always discard about half before feeding, to control acidity and volume
Tip: use a Daily Dough Journal to log feeding dates, flour types and rise times. Over a few weeks you'll start seeing patterns that predict your best bakes.
2. Feeding schedule: the heart of a healthy starter
Consistency matters more than precision.
Room temperature (active bakers)
- Feed every 12–24 hours
- Mix equal parts starter, water and flour — 50g of each is a good working ratio
- Keep it loosely covered in a clean jar
Refrigerated (occasional bakers)
- Feed weekly
- Take it out, discard half, feed, rest 3–4 hours, then return it to the fridge
What to write down: feeding ratios, room temperature, time to peak activity, and any change in aroma or texture. This is what tells you when your starter is at its happiest.
3. Choosing the right flour
Flour choice directly affects your starter's health. Whole grain and rye are excellent for getting a new starter going, because they carry more of the nutrients and wild yeast it needs.
For ongoing maintenance, all-purpose or bread flour gives a stable food source and consistent results.
If you experiment with blends, record it. Small changes in flour produce surprisingly large changes in flavour and rise.
4. Healthy vs unhealthy: how to tell
| Condition | What you'll see | What it means |
|---|---|---|
| Healthy | Bubbly, rises after feeding, smells slightly tangy | Yeast and bacteria in balance |
| Hungry | Flat or slow rise, sharply sour smell | Needs feeding |
| Overfed | Watery, inactive | Fed too frequently |
| Neglected | Greyish liquid (hooch) on top | Needs attention, but still revivable |
If it smells genuinely wrong — like rotten cheese — or shows fuzzy mould, start fresh. Almost everything else is fixable with consistent feeding.
5. Keep a baking journal — the actual secret weapon
This is where most home bakers fall short: they forget what worked.
Journaling turns baking from a run of lucky accidents into a repeatable process. Record feeding dates, hydration ratios, rise and fall timings, and the result — crumb, crust, flavour. Photos help more than you'd think.
Over time it becomes a personal sourdough diary, and the single cheapest way to get better. Our spiral notebooks lie flat on a counter, which matters when your hands are covered in flour.
6. Common problems and quick fixes
| Problem | Cause | Fix |
|---|---|---|
| Slow rise | Cold environment | Move somewhere warmer (25–28°C) |
| Runny starter | Too much water | Add more flour at the next feed |
| Vinegar smell | Over-fermentation | Discard half and feed fresh |
| Mould | Contaminated jar or long neglect | Clean jar, start again |
If it seems inactive rather than dead, try rescue feeds: twice daily at room temperature for two to three days. Most starters come back.
7. Stay comfortable while you do it
Caring for a starter gets messy. A dedicated apron saves your clothes, and a Flour Power hoodie or Knead More Love tee makes the 6am kitchen considerably more bearable. See the full apparel range.
8. Sharing your starter
Sourdough has always been about passing things on — a jar from one baker to the next. If you gift a portion to a friend, write out your feeding notes to go with it and wrap the jar in a canvas tote.
Encourage them to name it. Every good starter deserves one, and it makes people far more likely to keep it alive.
9. Sustainability and long-term care
We believe in slow, deliberate baking and the same approach to what we make. Everything is produced to order, so nothing is manufactured until someone wants it and no unsold stock goes to landfill. More on that on our sustainability page.
10. Capture the journey
Every loaf tells a story. Share yours on Instagram and tag @Zomamoda with #ZomaModaBakes — we feature community bakers regularly.
Common questions
How often should I feed my sourdough starter?
Once or twice a day at room temperature, or once a week if you keep it in the fridge. Always discard about half before feeding to keep acidity and volume under control.
Why is there grey liquid on top of my starter?
That's hooch — alcohol produced when the starter has run out of food. It isn't dangerous. Pour it off or stir it in, then feed. It's a hunger signal, not a death sentence.
Can a neglected sourdough starter be revived?
Usually yes. Discard most of it, then feed twice daily at room temperature for two to three days. Only genuine mould or a rotten smell means starting over.
ZomaModa makes sourdough and baking gear for people who take it far too seriously. Browse baking journals or see the apron range.