Building a Sourdough Starter from Scratch
A reliable starter is the foundation of long-fermented bread. Treat this like a pet that lives on your counter, requiring consistency and observation rather than strict adherence to a clock.
Consistency is your greatest tool.
Use filtered water if your tap water is heavily chlorinated, as it can inhibit yeast growth. Use whole grain rye or whole wheat flour for the first two days to jumpstart activity before switching to bread flour.
- Digital kitchen scale
- Glass jar with loose-fitting lid
- Silicone spatula
What goes in.
- 50gWhole rye or whole wheat flour
- 50gWater, lukewarm
- 50gBread flour (for subsequent feedings)
Managing the volume
Discarding half the mixture before every feeding is essential to prevent overwhelming your jar and ensuring the fresh flour provides enough food for the colony to thrive.
The method.
Day 1: Initial mix
Combine 50g of whole rye flour and 50g of water in your jar. Stir until no dry flour remains. Cover loosely and leave at room temperature.
Day 2: First check
You might see a few bubbles. Discard half the mixture. Add 50g of bread flour and 50g of water. Stir well.
Days 3-6: Establishing
Repeat the discard and feeding process twice every 24 hours. The mixture should begin to smell mildly acidic and appear aerated.
Day 7: Testing
When the starter consistently doubles in volume within 4-6 hours of feeding and smells like overripe fruit or yogurt, it is ready to bake.
Other turns to take.
Rye Starter
Maintain the starter exclusively with rye flour for a more robust, tangier result.
Cold Storage
Once established, keep the starter in the refrigerator and feed it once a week to slow down fermentation.
When it doesn't go to plan.
Mark the jar with a rubber band at the starter's level after feeding to track exactly how much it rises.
If a dark liquid forms on top (hooch), your starter is hungry; pour it off and feed immediately.
Temperature matters: warmer kitchens will accelerate the fermentation cycle, while cooler rooms will slow it down.
The ones that keep coming up.
Does it matter if my starter doesn't double on day 3?
Do not worry. Every environment has different wild yeasts. Continue the daily feeding cycle and it will eventually gain strength.
Can I use tap water?
If your tap water smells strongly of chlorine, let it sit in an open pitcher for an hour before using to allow the gas to dissipate.
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