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    Home » Sourdough

    Sourdough Starter: Care & Feeding (Lazy Caretaker's Edition)

    January 6, 2015 • Updated: September 18, 2022 • by Renée B. • This post may contain affiliate links.

    Tips and advice for the care and feeding of a sourdough starter, including how to maintain it, and how to revive a neglected starter. (Don't worry - it happen's to the best of us!)

    Large old Mason jar filled halfway with sourdough starter, with a half an inch of brownish hooch resting on top of the starter.
    Jump to:
    • How to Maintain Sourdough Starter
    • How to Feed Sourdough Starter
    • Stages of Healthy Sourdough Starter
    • How to Revive Neglected Sourdough Starter
    • Sourdough Recipes

    How to Maintain Sourdough Starter

    Over the years, I’ve had an on again, off again relationship with my Sourdough Starter. Sometimes I treat it like the Queen at High Tea, sticking to a precise schedule and attending to its every bubbling need. Other times, I completely ignore it: I once forgot it in the back of the fridge for almost six months. Still, it persists.

    My sourdough use waxes and wanes in bouts that can last weeks, or even months. In waxing cycles, when I am baking bread nearly every day, a loaf rarely hits the cooling rack before someone slices off an end. We have homemade bread for our sandwiches and for our soup. We take it in our lunches and feast on it warm with slathers of peanut butter and sprinkles of sugar.

    But then I lose interest, and months can go by before I even give it a second thought again. Then Oh, what great consternation arises among certain citizens of our household! I get this a lot: "Mom, that jar of sourdough looks disgusting! If you aren't going to use it, then just throw it away!"

    Never! I know good sourdough parents don't have this problem. They feed their starter regularly, and they bake a loaf every three days like clockwork.

    This post isn't for them.

    Sourdough Parenting 101

    This post is for the rest of us. The negligent. The distracted. The throngs of home bakers who avoid sourdough altogether because they instinctively know that the waning times will come to them as well, and they just don't want to deal with the guilt. 

    Guess what? No one needs to feel guilty. Because a good Sourdough Starter will stay alive in the fridge with very little maintenance for extremely long periods of time, and can easily be activated when you want to use it. (OK, not really "right when" you want to use it: you need to plan about a day or two in advance.) 

    Closeup of Rye Sourdough Starter in progress - Day 4
    Healthy Rye Sourdough Starter

    How to Feed Sourdough Starter

    Sourdough starter can live forever – as long as you regularly give it a little attention. In other words, you need to clean their home occasionally and feed your sourdough starter regularly. 

    Sourdough starter is actually full of living colonies of yeast and lactic acid bacteria. These beneficial microbes consume the carbohydrates and proteins in the Starter. During this process, they ferment and convert those starches into CO2. It is this CO2 gas that provides leavening in your sourdough bread. 

    When these microbes run out of food, they get hungry and start to slow down. If you leave them alone too long, the whole colony will die (and take your neglected Sourdough Starter out with it). 

    (NOTE: I have yet to completely kill a Sourdough Starter; and believe me, I've tried.)

    How often should I feed a starter?

    Healthy sourdough starter can be refrigerated for up to a week between feedings if you are not using it for other things. (Honestly, I often leave it FAR longer with no problems.) However, most sourdough experts recommend feeding Sourdough Starter at least twice a week for best results. 

    When you feed your starter, always use a wooden or non-reactive spoon to stir it. Never allow any kind of reactive metal to come in contact with your sourdough starter. (Stainless steel is fine.) 

    How much should I feed a starter?

    The amount you feed your sourdough starter depends on how much of it you have to start with. You want to approximately double your starter each time you feed it.
    For example, if you have 8 ounces of Starter, you will feed it 4 ounces of water and 4 ounces of flour. 

    I keep a 100% Hydration Starter. A 100% hydration sourdough starter is a sourdough culture which is kept and fed with equal weights of water and flour. (If you don’t have a kitchen scale, that equates to about ⅔ to ¾ cup of water for every cup of flour.) 

    Always leave enough room in your Sourdough Jar for the Starter to triple in size! 

    What if I don't want to double my Starter? Do I have to throw away the discard? 

    Heavens, No! You can make all kinds of yummy things with extra sourdough starter! (Start with my mom's sourdough hotcakes or our delicious Cranberry Crumb Sourdough Coffee Cake recipe.)

    If, however, you have more starter on hand than you anticipate using for baking, you will need to toss (or share!) a cup or more, and then double what remains. You always want to have at least 8 ounces of Starter after baking to keep the process going. 

    After you feed it, allow the starter rest in a dark, warm place (70°F) for 12 hours, and then place in the refrigerator if you will not be using it in the next 24 hours. 

    Mom's Sourdough Hot Cake Recipe on a plate, with three small pancakes stacked beside it.
    These sourdough pancakes are a great way to use extra sourdough starter (i.e., Discard).

    Stages of Healthy Sourdough Starter

    When you want to bake with sourdough starter, you first need to determine if your recipe calls for Fed, Active, Ripe, or Unfed Starter. (For example, my Easy Sourdough Bread recipe calls for Unfed Starter)

    • Fed Starter – Fed Starter is active, healthy starter that has been fed within about 2 hours. By hour 2, it will be producing little bubbles on the surface. 
    • Active Starter – Starter is Active about 5 hours after feeding. By hour 5, you should be able to watch large bubbles actively rising through the Starter and making their way to surface.
    • Ripe Starter – Starter is considered Ripe about 8 hours after feeding. The volume has doubled, and the top is just beginning to show signs of sagging under its own weight. 
    • Unfed Starter – Unfed Starter is healthy, vigorous Starter that has not been fed for 12 hours or more. By hour 12, it collapsed after Ripening, and is ready to be fed again or put in the fridge until next time. (Note that this is NOT neglected Starter that hasn’t been fed in days.)
    • Discard – Sourdough discard is the portion of your sourdough starter that you get rid of when you do a feeding. It should be healthy and vigorous, with some small bubbling activity.

    If you aren’t up to making bread, you can always use up extra Starter (i.e., Discard) by making pancakes, waffles, etc.

    Always reserve at least 8 ounces of Starter to feed and keep the process going. 

    How to Revive Neglected Sourdough Starter

    So, you just found your forgotten jar of Sourdough Starter in the back of the fridge, sad and neglected under a little puddle of hooch. (Or a big black cloud of ick.) Don't worry - it happens to the best of us. 

    Before you can try to revive your Starter, you need to do some triage. Open your jar and look inside.

    • A - If mold is aggressively growing, if it has a distinctly pink tinge, or if it smells rotten or putrid, toss it. There is no saving it. Then get a fresh, clean jar, and start making a brand new Sourdough Starter.
    • B - If it looks gross but doesn't smell horrible, continue to Step 1. 
    1. Drain off any hooch from your old Starter. (Hooch is the grey-black liquid that is probably sitting on top of your Starter. It's basically sourdough poop.)
    2. Using a stainless steel spoon, carefully spoon off the top layers of Starter. You want to try to completely remove the top layer and get down to the cleaner, dormant layer without contaminating it too much with the gross stuff on top. 
    3. Determine if your Starter has totally gone bad, or if it is salvageable. (90% of the time, if it gets past the initial triage, you can save it.) Smell the stuff at the bottom of the jar. It should smell decidedly sour, but not rancid or spoiled. You know the difference. If it smells putrid, chuck it. 
    4. If at least a tablespoon of your Starter is salvageable, put as much "good starter" from the old jar as you can into a fresh, clean jar.
    5. Stir in one half as much flour and water as you would normally feed a healthy Starter. For example, if you have a cup of salvageable starter, stir in 4 ounces of water and 4 ounces of flour. (I always use a kitchen scale when I feed my Starter.) If you have only a tablespoon of starter, it's going to take you a little longer to build it back up, but you can do it. (Wilbur, my 100-some year old starter, was revived from less than a half teaspoon of dried flakes!)
    6. Allow fed Starter to sit at room temperature again for 8 hours. 
    7. Repeat Steps 5 and 6 one or more times, until your Starter is bubbly, percolating and ready to use.

    The total "revival" process usually takes 24-48 hours hours. After that, you will should have an active, bubbly Starter that you can either put it back in the fridge and ignore it again until next time. Or, you can continue to wake it up by feeding it every 8 to 12 hours for a day and get ready to bake!

    [Read more about how to revive dried sourdough starter here.]

    Once your Starter is vigorous and active, you can go back to feeding it once or twice a week. After every feeding, allow it to sit out for 12 hours before putting it back in the fridge. 

    Sourdough Recipes

    • Single pumpkin scone on a small plate, with a mandarine orange on the side. Large serving plate of scones in the background.
      Pumpkin Spice Sourdough Scones
    • Cranberry Crumb Sourdough Coffee Cake
    • Stack of pancakes on a flowered blue plate.
      Mom's Sourdough Hotcakes (Sourdough Pancakes)
    • Kaylen's Bread (Easy Sourdough Bread Recipe)

    A final note for all you Artisan Sourdough Bakers out there who feed your starter regularly: I know you've been cringing your way through this entire post! Please be kind in your comments. We all know that this is not the optimal way to take care of sourdough starter. But for those of us who are on-again, off-again in our baking and find ourselves with neglected sourdough starter, this protocol is better than a kick in the head, as my Dad used to say.

    For more recipes and cozy living tips, subscribe to our newsletter and follow us on Instagram, Pinterest, and Facebook for all of the latest updates.

    Large, tall old Mason jar filled halfway with sourdough starter, with a half an inch of brownish hooch resting on top of the starter.

    Disclosure: This post may contain affiliate links, including Amazon affiliate links, which means we may receive a commission if you click a link and purchase something that we have recommended. Please check out our disclosure policy for more details.

    More Sourdough Recipes & Resources

    • How to Make Rye Sourdough Starter
    • Overhead shot of Sourdough Spaetzle plated with caramelized cipollini, sauteed mushrooms, and tabasco shallots.
      Rye Sourdough Spaetzle (Spätzel)
    • Old-sea-green Mason jar with a small amount of sourdough at the bottom.
      How to Use Dried Sourdough Starter
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    About Renée B.

    Renée is writer, music maker, artist, and storyteller. In her spare time, you can find her writing love songs about cowboys, exploring the moss-covered nooks and crannies of the Pacific Northwest, and making music with her talented singer-husband.

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    1. Liz says

      December 24, 2022 at 5:52 am

      Renee, I absolutely love your post! I am just like you! I treat my starter like royalty and then I ignore and neglect it to the point of near death at times. I think the longest I have gone without feeding my starter is 2 months and I was still able to revive it! One time I was trying to quick activate my starter and I put the oven on low, turned it off and put my starter in. Well my oven is no proofing drawer and I baked partially baked the edges of my starter. At the time I was still feeding two starters-the one I made from scratch and the one with a lineage of over 100 years given to me by my sourdough mentor. I felt devastated, but all was not lost because I was able to scrape about a gram from each jar. I combined them and fed the new mixture 2 to 1 twice; resulting in a strong and happy starter. Course I had to rename it. My reincarnated starter is Doughy Tribiani! Anyways, following you now because you are a down to earth baker that I can totally relate to and your voice provides a much needed sensible approach to the newbies to artisan baking <3

      Reply
      • Renée B. says

        December 27, 2022 at 4:45 pm

        Thank you so much for the kind words: it means so much to know you can relate. In this Insta-TikTok world, keeping things real isn't always encouraged, and I genuinely appreciate your support.

        I'm intrigued with your 100-year starter. Do you have the lineage on it? (It's a fun little bit of family trivia if you do.) It is amazing how those old starters can survive the worst of conditions.

        P.S. I *love* "Doughy Tribiani"!

        Reply
    2. Rosemary Lewis says

      November 13, 2022 at 4:48 pm

      How do I make a starter?

      Reply
      • Renée B. says

        November 13, 2022 at 8:51 pm

        Visit How to Make Rye Sourdough Starter for step-by-step instructions.

        Reply
    3. Penny says

      March 10, 2022 at 6:15 pm

      Why do you need to let the starter sit out after you feed it before putting it in the fridge? I usually feed it and put it back in the fridge right away so it eats slower and when i take it out, it doubles on its own

      Reply
      • Renée says

        March 20, 2022 at 2:21 pm

        I've just always done this so it is ready to go the next day. However, you can definitely put it right back into the fridge after feeding it.

        Reply
    4. Ann Cranford says

      February 04, 2022 at 4:41 pm

      When I put my starter in the fridge can I put the jar lid on tightly

      Reply
      • Renée says

        February 04, 2022 at 4:56 pm

        Yes, you can cover it tightly when you put it in the fridge. It's best to keep it in the back, coldest part of your fridge if you do.

        Reply
    5. Marie says

      January 08, 2022 at 8:09 pm

      Wait, what if I accidentally mixed the starter all together (poop and all) and fed it before googling... should it eventually come back to life? Will it just take longer?

      Reply
      • Renée says

        January 11, 2022 at 2:36 pm

        It will probably be fine. In fact, some old sourdoughs adamantly insist that the hooch should never be drained. (I am not one of them.)

        There is a distinct difference between the smell of sourdough with a little hooch floating on the top and sourdough gone bad. You can usually see the difference, and if not, you can definitely smell it. Good starter will have a fresh, yeasty, occasionally sharp smell. If it has just gone too long without feeding, hooch will start to float on top and it can smell like alcohol. When a starter has gone too far (or almost), it will smell funky and spoiled, and possibly like acetone.

        Reply
      • Allison says

        January 17, 2023 at 4:56 pm

        I once read to stir the hooch into it, so that's what I've always done! So far, so good!

        Reply
        • Renée B. says

          January 17, 2023 at 5:54 pm

          Do what works for you!

          Hooch is harmless, but best practices for sourdough advise pouring it off off prior to feeding the starter. If a hooch is regularly forming on your starter, it means it is starving for food. In this case, consider feeding the starter more frequently, or moving it to a cooler spot.

    6. Alyssa says

      July 21, 2021 at 6:48 pm

      I talk about how I neglect and abuse Agnes all the time. That’s my baking style as well—baked goods non stop to months without feeding Agnes—poor lady.

      You piqued my interest at Wilbur. Who did you get 100-something year old Wilbur from??

      Reply
      • Renée says

        July 22, 2021 at 6:06 am

        I got Wilbur from "Friends of Carl." They will mail you Carl Griffith’s 1847 Oregon Trail Sourdough Starter in dried form for the cost of a self addressed stamped envelope. For details, visit Friends of Carl.

        Reply
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