What You’ll Learn
- Why smaller starters are easier to maintain.
- How to build up before baking.
- How much starter one loaf usually needs.
- How to reduce discard.
- How fridge storage helps occasional bakers.
Quick Answer
For most home bakers, keeping around 20–50g of starter is plenty. You can build the amount you need before baking by feeding it. The exact amount is less important than maintaining a healthy culture and planning your build around the recipe.
This lesson is part of our Sourdough Starters section: “Learn how to care for the heart of every loaf.”
Why Keep a Small Starter?
A smaller starter uses less flour, produces less discard and takes up less fridge space.
Is 20g Enough?
Yes. Even 10g of healthy starter can be fed to create much more starter before baking.
How to Build for a Recipe
Work backwards from the amount the recipe needs. Keep enough extra to maintain your culture afterwards.
Example Build
If you need 100g for a recipe and want 20g left over, you can design a feed that produces at least 120g total.
How Much for One Loaf?
Recipes vary widely, often using roughly 50–150g starter. Follow the recipe rather than assuming every loaf needs the same amount.
Small Starter and the Fridge
A small refrigerated starter is particularly efficient for weekly or occasional baking.
From Our Workshop
Keeping less starter is one of the simplest ways to make sourdough feel less wasteful. You can always make more; you do not need to store tomorrow’s loaf in the jar today.
Bake Slower Tip
Keep a small ‘mother’ starter and build only what the next bake needs.
Common Mistake
Do not maintain 300–500g of starter simply because your first recipe told you to. That often creates unnecessary discard.
Today You Learned
- 20–50g is enough for many home bakers to maintain.
- Healthy starter can be scaled up quickly.
- Build to the recipe rather than storing large amounts.
- Smaller starters reduce flour waste.
- Refrigeration makes a small starter even easier to manage.
Frequently Asked Questions
Can I keep only 10g starter?
Yes, provided your scales are accurate and the culture is healthy.
How much should I keep after baking?
Enough to maintain the culture; often 10–30g is plenty.
Do larger starters stay healthier?
No. Health depends on feeding and conditions, not jar size.
How do I make 100g starter from 20g?
For example, add 40g flour and 40g water for a 1:2:2 feed.
Does a small starter dry out faster?
In a suitable covered jar, normal maintenance is straightforward.
Need the Right Starter Setup?
A practical jar and accurate scales make maintaining a small starter much easier.
Continue Learning
Next lesson: Sourdough Starter Smells Like Alcohol
A simple starter check
Keep one variable stable while you diagnose the starter. Record the flour, feeding ratio, room temperature and approximate rise after each feed. A short three-feed record is usually more useful than changing flour, ratio and temperature all at once.
