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Sourdough Starter

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Create your own sourdough starter from scratch at home in just a few days. Once it shows consistent signs of fermentation each day, you’re ready to start baking sourdough bread!

Ingredients

300 grams all-purpose flour
400 grams whole-grain rye flour
800 grams water

Directions

  1. Day One
    To a clean jar, add 100g whole rye flour and 125g warm water. Mix ingredients and keep somewhere warm for 24 hours.
  2. Day Two
    To clean jar, add 75g of the mixture from Day One (discard the rest), 50g whole rye flour, 50g all-purpose flour, and 115g water. Mix ingredients and keep somewhere warm for 24 hours.
  3. Day Three
    To a clean jar, add 75g of the mixture from Day Two (discard the rest), 50g whole rye flour, 50g all-purpose flour, and 115g water. Mix ingredients and keep somewhere warm for 24 hours.
  4. Day Four
    On day four, you will give the mixture two feedings. In a clean jar, add 75g of the mixture from Day Three (discard the rest), 50g whole rye flour, 50g all-purpose flour, and 115g water. Mix and let rest for 12 hours. In the evening, after 12 hours, repeat the discarding and feeding you did in the morning. Let the mixture rest overnight.
  5. Day Five and Six
    For days five and six, continue to discard down the jar contents and then feed with the same ratio of ingredients as Day Four, twice a day. You can use the same jar for these feedings.
  6. Day Seven and Onward
    In the morning on Day Seven, discard the jar’s contents down to 20g of the mixture and add 30g whole rye flour, 70g all-purpose flour, and 100g water. Repeat this feeding twice a day, once in the morning and once in the evening, indefinitely.
Related
Sourdough · Basics · Bread

modified, based on: https://www.theperfectloaf.com/7-easy-steps-making-incredible-sourdough-starter-scratch/print/10771/