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Feeding your starter: a simple weekly rhythm

How to keep a starter strong with ten minutes a week, whether you bake every day or once a month.

Walter Braandt3 2 min read
Risen dough in a glass bowl under a linen towel on a marble counter

A sourdough starter is flour and water plus the wild yeast and bacteria that move in. It is far tougher than its reputation. Most starters that seem to be failing are simply hungry, cold or fed on an irregular schedule.

If you bake every day

Keep the starter on the counter and feed it once or twice a day. Discard all but 20 g, then stir in 100 g of flour and 100 g of lukewarm water. At this 1:5:5 ratio it peaks in six to ten hours at room temperature, which lines up neatly with a morning or evening mix.

If you bake once a week or less

Keep it in the fridge and feed it once a week. Two feeds at room temperature the day before you bake bring it back to full strength.

  • Mark the level with a rubber band after feeding, so you can see how far it rises.
  • Add a spoonful of rye flour to each feed. It gives the yeast extra food and a more reliable rise.
  • Grey liquid on top, called hooch, means it is hungry. Pour it off and feed it.

Reading the signs

What you seeWhat it meansWhat to do
Doubled, domed top, lots of bubblesAt its peakUse it now
Collapsed, streaks down the jarPast its peakFeed it and wait for the next rise
Barely rises after a feedToo cold or underfedMove it somewhere warmer and feed twice a day

A neglected starter can almost always be revived. Three feeds in a warm spot bring most of them back.

Kitchen testedLast baked

Printable cardpdf · starter-feeding-cheat-sheet.pdf (opens in a new tab)
Walter in a white baker's cap and apron, looking down at the dough he is shaping

Written by

Walter Braandt

Head baker

Walter baked for forty years in his family's bakery before turning his home kitchen into a classroom. He writes the methods here and tests each one at least three times before it goes up.

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