Sourdough Starter Feeding Calculator

FOOD & COOKING CALCULATOR Sourdough Starter Feeding A precise tool.
📖
What is the Sourdough Starter Feeding & How does it work?

A sourdough starter is a living culture of wild yeast and bacteria that ferments flour and water. Regular feedings keep the microbial population active, prevent over‑acidification, and ensure the starter stays vigorous for baking.

During each feeding you typically discard a portion of the existing starter, then add fresh flour and water. The discard controls the total mass and keeps the yeast‑to‑food ratio optimal. The relationship can be expressed mathematically:

\text{New Starter}=S_{old}bigl(1-\frac{d}{100}bigr)+F+W
S_{old} = weight of starter before feeding (g)
d = discard percentage (%)
F = flour added (g)
W = water added (g)

By calculating the post‑feeding weight you can plan how much starter you’ll have for the next bake and schedule the next feeding interval. Consistent ratios lead to predictable rise times and flavor development.

⚙️
Parameters
Result —
❓
Frequently Asked Questions
How much starter should I discard during each feeding?
Typically, you discard about 70-80% of the existing starter before adding fresh ingredients.
What is the ideal ratio of flour to water for sourdough starter?
A common ratio is 1:1 by weight, but this can vary based on your specific starter’s needs.
How often should I feed my sourdough starter?
Feed your starter every 8-12 hours until it becomes active and bubbly.
Can I use different types of flour for feeding my starter?
Yes, you can use all-purpose flour or rye flour, but whole wheat may affect the texture.
What signs indicate that my sourdough starter is healthy?
A healthy starter should have a bubbly surface and a slightly yeasty smell.
How do I store my sourdough starter when not in use?
Store it in the refrigerator, feeding it once a week to keep it active.
Can I freeze my sourdough starter for later use?
Yes, you can freeze your starter by dividing it into smaller portions and storing them in freezer bags.

Results are for informational purposes only and do not constitute professional advice.