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Moldy sourdough starter in a glass jar

Moldy Sourdough Starter: 5 Warning Signs You Must Never Ignore


  • Author: Marlene Quinn
  • Total Time: 5
  • Yield: 1
  • Diet: Vegan

Description

Avoid a moldy sourdough starter with proper care, storage, and inspection tips. This guide helps you recognize, prevent, and respond to mold confidently.


Ingredients

  • Clean glass jars

  • Filtered water

  • Unbleached flour

  • Dry cloth or loose lid

  • Clean spoon

  • Optional: dried sourdough starter backup


Instructions

  • Inspect your starter visually and smell for signs of spoilage.

  • If you see pink, orange, or fuzzy mold, discard the starter immediately.

  • Feed your starter using equal parts flour and water in a clean jar.

  • Use filtered water to avoid chlorine that harms the culture.

  • Store the starter with a loose lid or cloth in a cool, dry place.

  • Cool bread fully before wrapping in cloth or paper for storage.

 

  • Dry a small portion of starter on parchment as a backup.

Notes

  • Always err on the side of caution if mold appears.

  • A moldy sourdough starter should not be salvaged if it shows colored fuzz.

 

  • Clean tools and regular feeding are your best defense.

  • Prep Time: 5
  • Category: Sourdough
  • Method: No-cook, Guide
  • Cuisine: Global

Nutrition

  • Serving Size: 1
  • Calories: 0
  • Sugar: 0g
  • Sodium: 0mg
  • Fat: 0g
  • Saturated Fat: 0g
  • Unsaturated Fat: 0g
  • Trans Fat: 0g
  • Carbohydrates: 0g
  • Fiber: 0g
  • Protein: 0g
  • Cholesterol: 0mg

Keywords: moldy sourdough starter, sourdough mold prevention, sourdough care, discard sourdough