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Sourdough Starter From Scratch

Get your own starter going with just flour, water, and time!
Prep Time 7 d


  • Quart Glass Jar


  • 4-5 Cups Flour Divided over 7 days
  • 4-5 Cups Water Filtered is best, divided over 7 days


  • DAY 1
  • Stir Together 1/2 Cup Flour and 1/2 Cup Water. Cover with a breathable covering, something like a coffee filter, tea towel, or beeswax wrap


  • Feed your starter another 1/2 Cup Flour and 1/2 Cup Water, Stir. Cover again, set aside until tomorrow.

Day 3

  • Today you may see bubbles! Very exciting! There may be a layer of liquid on the top as well, this is normal, it means the starter is hungry. Stir it all together. Remove 1/2-3/4 cup of the starter and place it in a new quart jar. Now, feed that with another 1/2 cup flour and 1/2 cup water. You can save the remaining starter or toss it. You can add that starter to "discard" recipes.

Day 4

  • Feed your starter 1/2 Cup flour and 1/2 cup water, stir, cover, and set aside.


  • Feed the starter 1-2 times a day removing 1/2 cup to 3/4 cup of the starter before feeding each time. If you only feed once a day, you may need to feed closer to a cup of flour and a cup of water. Keep the size of your starter manageable by removing some of it before each feeding.
    By day 7 the starter should be doubling in size 4-8 hours after it is fed. If it does, that means it is ready to bake with!