How To Activate Sour Dough Starter

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Equipment Needed for Activating a Sourdough Starter:

  • Quart-size glass jar

  • Non-metal stirring utensil

  • Tight-weave cloth or paper coffee filter 

  • Rubber band to secure the cover to the jar

Ingredients for Activating a Sourdough Starter-- click here to order a sourdough starter

  • 1 packet dehydrated sourdough starter

  • Unchlorinated, unfluoridated water

  • Appropriate flour for your sourdough starter (check enclosed instructions)


  1. Pour the entire contents of the packet into a clean one-quart glass jar.

  2. Add ¼ cup room temperature water and mix well. 

  3. Add ¼ cup flour and stir vigorously. Be sure to incorporate a significant amount of air into the mixture.

  4. Cover with a tight-weave towel or coffee filter, secured with a rubber band.

  5. Place jar in a warm area, 70°-85°F, for 12-18 hours.

  6. After 12-18 hours, feed the starter: Mix in ½ cup water and scant ½ cup flour. Stir vigorously.

  7. Cover as in step 4 and return to the warm spot for 12 hours.

  8. After 12 hours, discard all but ½ cup starter mixture. 

  9. Mix in ½ cup water and a scant 1 cup flour. Stir vigorously and cover.

  10. Repeat steps 8 and 9 every 12 hours, until mixture becomes light and bubbly, typically 3 to 7 days.

  11. Once the starter is bubbling reliably within a few hours of being fed, feed for 2 more cycles. The starter is now activated.

What to Do With Activated Sourdough Starter

Once your sourdough starter is active and bubbly for 3 consecutive feedings, you have a few choices. You may:

1.Prepare fresh starter for baking

2. Maintain starter daily at room temperature

.3. Maintain starter weekly in the refrigerator

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