Dehydrating Sourdough starter: Long-Term Storage

I love baking in general but sourdough has a special place in my heart. I have spent countless hours researching, experimenting and baking with sourdough starter. Sourdough is a labor of love and I still have a spark of joy every time I take the top off my dutch oven and see the “oven spring” in a beautiful loaf of bread. 

What do you do when you need to take a break from your sourdough “baby?”

Because keeping sourdough alive is such a process, (tips for maintaining your sourdough starter here), it can be a little disheartening to leave your “sourdough baby” when you have a vacation or you just want to take a little break from the daily or weekly feeding process. In the past, after months of successful baking, I have let my starter die because I didn’t know how to travel with it or store it properly when I needed a break from the daily feeding process (when I had my babies, job changes or moves, etc…). 

This year I feel a particularly special connection to my sourdough starter. We’ve been through a lot together…COVID-19, my son’s type 1 diabetes diagnosis, “unintentional homeschooling,” and starting up this blog. We have baked a lot of good loaves of bread together. When I decided to travel across the country to visit family post-quarantine, I didn’t want to leave my sourdough starter behind. I knew I had to find a way to travel with it that didn’t have me stopping at gas stations every morning to feed my starter or having it confiscated at airport security for it being a “liquid.”

Long-Term or Short-Term Sourdough Starter Storage

Sourdough starter can be kept in your fridge with a weekly feeding and honestly it can usually keep in the fridge for up to a month or longer if you really “forget about it” (though I wouldn’t recommend it!). The best way I’ve found to travel with sourdough starter or to store it if you just need a little break from a weekly feeding is to dehydrate your starter. Once the starter has been dehydrated and placed in an air-tight container, you can store the starter in a cool, dry, dark location for many months…even years.

How to Dehydrate Sourdough Starter

  1. If you have been feeding your starter at room temperature daily: Feed it like normal and wait until the starter barely doubles in size (usually 4-6 hours) and is very bubbly.
  2. If you have been feeding your starter weekly in the fridge: Feed your starter like normal and leave it on the counter. After 12 hours, feed it again and wait 12 hours at room temperature. Feed it for the third time and wait (usually 4-6 hours) until it is very bubbly.
  3. Once the starter is very bubbly (usually 4-6 hours after feeding), line a baking sheet with parchment paper. Using an offset spatula (affiliate link), spread the bubbly sourdough starter very thinly onto the piece of parchment paper.
  1. 4. Let the starter air dry for up to 24 hours. If after 24 hours the starter is not dry, try setting it in your oven with the oven light on. Make sure your oven is turned OFF. Turning the oven on will kill your starter. Leaving just the oven light on with the starter inside and the door closed will give off enough heat to help dry out the starter. Alternatively you can leave it out at room temperature to dry for another few hours.
  1. 5. Once the starter is completely dry, break it up into little pieces and place in an airtight container. Store in a dark, cool place for many months or up to a few years (Full disclosure: I haven’t stored my starter for years, but everything I’ve researched has shown that with proper storage a dehydrated starter will store for a long time).

Travel. Take a Break. Mail some to a Friend.

Once your starter is dehydrated and stored, go ahead and feel the freedom of traveling…or just not being tied to the feeding process. Sometimes you need a little break. Bring a little starter with you if you want to bake for family/friends you are visiting, or keep it in your pantry if you want a little break. You could even mail some to a friend who wants to make their own sourdough bread but can’t seem to figure out how to get a starter going. If you need tips for creating your own starter, check them out here. Once you are ready to bake with your starter again, start the re-hydration process. This will take about 2 days (48ish hours) to get your starter nice and bubbly, and is very dependent on temperature and climate, so plan accordingly.

Dehydrated starter ready to re-hydrate (or store in an airtight container).

How to Re-hydrate your Sourdough Starter

Note: If you are in a new-to-you area and don’t know the properties of tap water (some tap water has small amounts of chlorine in it, which is not good for sourdough), feed your dehydrated starter with distilled or bottled water

First Hour

Choose a jar to rehydrate your starter in. Place the dehydrated starter into the new jar. Using distilled water (or water from a water bottle), cover the dehydrated starter with water. The water should just cover the dehydrated starter.

1-4 Hours

Stir the starter every hour for about four hours. Every time you stir the starter, notice how the sourdough is breaking down and the mixture is turning cloudy. After about four hours, the starter should be dissolved in the water. If it’s not dissolved, give it a little more time and keep stirring. Proceed once the starter is completely dissolved.

4-16 hours (or overnight)

Spoon about 1/4 cup of flour into the dissolved sourdough and mix to combine. Add more flour if the mixture is soupy. It should be the consistency of a thick batter. If needed, add 1-2 Tablespoons of water to keep the mixture the consistency of a very thick batter. Let the mixture sit overnight or about 12 hours.

16-28 hours Stir, Feed and let sit for 12 hours 

Check on the mixture. Look for bubbles, activity and maybe even some hooch (a thin, sour smelling liquid on the surface of the starter). If the starter has bubbles and looks active, feed* it. If it doesn’t look very active, let it sit in a warm place for a little bit longer.

*To feed the starter, discard 3/4 of the starter. Add 1/3-1/2 cup flour to the jar with the 1/4 cup starter remaining. Add a few Tablespoons of water and mix to combine to a thick batter consistency.

28-40 hours Stir, Feed and let sit overnight (12 hours)

Stir down the starter, pour off any hooch and feed the starter. Mark your jar and watch as the starter rises and falls.

40-52 hours Stir, Feed and let sit for 12 hours

If the starter hasn’t doubled in size yet, repeat the feeding process. Feed the starter. Mark the jar and watch for it to become bubbly and rise.

Ready to use Again

Once your starter is rising and falling predictably, it is ready to use! Location, ambient temperature, environment etc… will determine how quickly this process or re-hydrating works but your starter should be rising and falling within 48-72 hours.  

Ready to bake with! One bowl of leaven and continuing to feed my starter.

From this point, you are just a few simple ingredients away from some very, very good bread that won’t take you a week or more to make your own starter! If you are looking for some good sourdough bread recipes, check out some of my favorites here, here and here.

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Amy

Only posting the best recipes to make you a rockstar in the kitchen.

One thought on “Dehydrating Sourdough starter: Long-Term Storage

  1. We are grateful to be the well-fed beneficiaries of your rehydrated sourdough starter!! Thank you for bringing it across the miles and sharing all that deliciousness with us!! ❤️🍞🥖🥐🥞🧇😋

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