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How to Create a Potato Flake Sourdough Starter

This easy potato flake sourdough starter recipe is the perfect way to begin your sourdough journey. Made with simple ingredients like bread flour, potato flakes, sugar, and yeast, this method creates a mild, slightly sweet starter that’s forgiving and full of life. Within 5–7 days, you’ll have a bubbly, active starter ready to bake soft, flavorful homemade bread.
Prep Time10 minutes
Course: Fermented Foods
Keyword: homemade sourdough starter, how to create potato flake sourdough starter, potato flake sourdough, potato flake sourdough starter, simple sourdough starter
Yield: 2 cups of starter

Equipment

  • 1 Glass jar or large glass container (wide-mouth preferred)
  • 1 Wooden Spoon or Spatula (avoid metal)
  • Measuring cups and spoons
  • Tea towel or breathable lid
  • Rubber band or marker (to track rise)

Materials

  • 2 Cups Bread Flour Unbleached Red Wheat Flour
  • ¼ Cup Cane Sugar Unbleached
  • ¼ Cup Dry Potato Flakes Organic
  • 1 Package Dry Yeast
  • 2 Cups Warm or Room Temp Water

Instructions

  • In a medium bowl, combine bread flour, cane sugar, and potato flakes until well mixed.
  • In a separate small bowl, dissolve the yeast in warm water.
  • Pour the yeast mixture into the dry ingredients and stir until smooth and fully combined. (Avoid using metal utensils or bowls — wood or glass is best!)
  • Transfer your mixture to a loosely covered glass jar or container.
  • Leave the starter at room temperature for 2–3 days, stirring several times each day.
  • After the third day, check for bubbles and rise — your starter should be expanding and smell sweetly yeasty.
  • By days 5–7, it should double in size within a few hours of feeding and be ready for use.

Notes

  • Your starter is “active” when it’s bubbly, has doubled in size, and smells lightly sweet.
  • Keep it at room temperature until it’s fully developed, then move it to the fridge for storage.
  • Stir gently if a layer of liquid (called hooch) forms on top — this just means your starter is hungry.
  • Avoid airtight lids — your starter needs to breathe.
  • Once your starter is bubbly and active, move on to feeding it regularly using the feeder recipe below.
    Active potato flake sourdough starter overflowing from a glass jar after feeding, covered with a red cloth.
    An extra-active potato flake sourdough starter — proof that your yeast is thriving! Always leave room for expansion when your starter is happy and bubbly.