Sourdough Starter
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Marc's OriginalBread

Sourdough Starter

Marc’s sourdough culture — the “starter” — from the family notebook. Flour, filtered water, a glass jar, and about six days of discard-and-feed until it doubles, bubbles, and smells pleasingly tangy. Keep it fed and it keeps you baking. This is what the Sourdough Loaf calls for.

Marc, the bakerMarcthe bakereasy

Instructions

  1. Day 1 — In a wide-mouth, non-reactive quart container, mix the flour and water. Glass is the best to use: you can track progress and keep an eye on it as it grows. Cover loosely with a mesh top or cheesecloth — covered, but let it breathe. Room temperature; 70°F is best.

  2. Day 2 — After 24 hours you may see a bit of growth or bubbling — or none of the above. Discard all but 50 g. Feed 50 g A.P. flour and 50 g filtered water into your starter. Mix well and cover loosely for 24 hours.

  3. Day 3 — More activity will be noticed by now: a fruity aroma, fresh bubbling, and some expansion. Now feed the starter 2 times daily, morning and night — discard all but 50 g, then feed 50 g flour and 50 g water each time.

  4. Days 4 and 5 — Same process as day 3: discard all but 50 g, feed 50 g flour and 50 g water, morning and night.

  5. Days 5 and 6 — The starter has doubled in size if all went well: lots of bubbles and a tangy aroma, pleasingly acidic but not overpowering. It is ready to bake with.

    Pro tip — Marc bakes when the starter is at its peak — better spring, a "pop" on the scores. Try it in his Sourdough Loaf.

  6. Maintaining your starter — Feed daily: discard, feed, cover.

    Pro tip — You can refrigerate your starter, but feed it at least once a week for best results.

Firehouse Notes

  • Bell-proof not this one
  • Bulk-ready not this one
  • Shift meal not this one
  • Drop-off friendly not this one