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Sourdough Starter Recipe

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  • Author: Mary
  • Prep Time: 5 minutes per day
  • Cook Time: 0 minutes
  • Total Time: 7 days
  • Yield: About 1 cup active starter 1x
  • Category: Basics
  • Method: Fermentation
  • Cuisine: Traditional
  • Diet: Vegan

Description

Learn how to create your own sourdough starter from scratch with this simple, step-by-step fermentation recipe. Using just flour and filtered water, you’ll cultivate wild yeast and beneficial bacteria over a week to form the foundation for delicious homemade sourdough bread.


Ingredients

Scale

Starter Ingredients

  • 1 cup (120g) all-purpose flour or whole wheat flour
  • 1/2 cup (120ml) filtered or dechlorinated room temperature water


Instructions

  1. Day 1 Mixing: In a clean glass jar or bowl, combine 1 cup of flour with 1/2 cup water. Stir thoroughly until no dry flour remains. Cover the container loosely with a cloth or lid to allow airflow and leave it at room temperature (70–75°F) for 24 hours.
  2. Day 2 Feeding: You may or may not see bubbles at this point. Discard half of the starter (approximately 1/2 cup) and feed it by adding 1 cup flour and 1/2 cup water. Mix well, cover loosely again, and let it rest for another 24 hours at room temperature.
  3. Days 3–7 Daily Maintenance: Repeat the feeding routine each day: discard half the starter and feed with fresh 1 cup flour and 1/2 cup water. By days 3 or 4, you should observe bubbles, a tangy aroma, and rising activity. Continue this process until day 6 or 7, when the starter should double in size within 4 to 6 hours after feeding and be full of bubbles with a pleasant sour smell.
  4. Ongoing Care: If you bake daily, keep the starter at room temperature and feed it once a day. For less frequent baking, refrigerate your starter and feed it once weekly. Always feed the starter before using it in a recipe to keep it active and healthy.

Notes

  • Use filtered or dechlorinated water because chlorine can inhibit the fermentation process.
  • Whole wheat flour can accelerate fermentation in the beginning stages but you may switch to all-purpose flour later.
  • Maintain cleanliness by using clean utensils and containers to prevent unwanted contamination.