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sourdough starter in glass jar with Danish whisk
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4.95 from 20 votes

How to Make a Sourdough Starter

This is the easiest method to make a sourdough starter, no measuring or discarding required!
fermentation time7 days
Total Time7 days
Course: Breakfast
Cuisine: American
Servings: 1 sourdough starter
Calories: 130kcal
Cost: $4

Ingredients

  • 1 cup buttermilk
  • 1 dash filtered water
  • 2-3 TBSP flour white or rye flour
  • ½ tsp caraway seeds, optional

Instructions

  • Combine buttermilk, water, flour, and caraway seeds in a glass jar (or in another non-reactive container. 
  • Adjust the ingredients so that your starter has a thick pancake batter-like consistency. Stir vigorously.
  • Lightly cover and leave in warm, undisturbed spot.  Check every day for progress.  You can also stir it.
  • Depending on the environment (temperature, moisture, wild yeasts), this can take about 5-10 days. 
  • Your sourdough starter is ripe when it has a pleasant sour smell and is bubbly and foamy. You can also drop a bit in some water: if it floats, it's ripe, if it sinks, it needs a few more days. 

Notes

  • while you don't NEED the caraway seeds, they will greatly speed up the process of making a sourdough starter
  • if you don't have buttermilk, you can also use plain yogurt, kefir, or kombucha (dairy-free alternative) but make sure that whatever you use has live active cultures

Nutrition

Calories: 130kcal
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