How To Feed Your Sourdough Starter

Pro tips

• Use equal parts starter, water, and flour (1:1:1 ratio) for consistent, predictable feeding — this is the foundation of starter maintenance
• Always use clean utensils and containers to prevent contamination and unwanted bacteria from affecting your starter's culture
• Feed your starter at the same time each day to establish a rhythm and keep fermentation patterns predictable for baking
• Look for a peak of bubbling activity and a domed top before using your starter in recipes for maximum leavening power

Substitutions

• all-purpose flour → bread flour (creates stronger gluten structure)
• all-purpose flour → whole wheat flour (adds nuttier flavor and faster fermentation)
• filtered or dechlorinated water → tap water (chlorine can inhibit wild yeast cultures)

Storage & make-ahead

Store your active starter at room temperature in a clean jar covered loosely with a cloth, or refrigerate between uses for up to 2 weeks.

Equipment

glass jar or container · kitchen scale (optional but recommended for precision)

How often should you feed your sourdough starter?

Feed your starter once daily if kept at room temperature, or once weekly if stored in the refrigerator. The exact frequency depends on your kitchen temperature and baking schedule.

What is sourdough starter discard and why do you discard it?

Discard is the portion of mature starter you remove before feeding. Discarding prevents the starter from becoming too large and helps maintain a healthy balance of wild yeast and bacteria cultures.

Can you use whole wheat flour instead of all-purpose flour to feed your starter?

Yes, you can substitute whole wheat or other flours, though all-purpose flour is standard. Whole wheat may create a more active starter but can affect flavor and fermentation speed.

How do you know if your sourdough starter is ready to use for baking?

A healthy starter should double in size within 4-8 hours of feeding, smell pleasantly sour, and show consistent bubbling activity throughout.

What temperature is best for feeding and maintaining a sourdough starter?

Room temperature (68-75°F) is ideal for regular feeding and maintenance. Warmer temperatures speed up fermentation, while cooler temperatures slow it down.