How to revive sourdough starter - even after a year!

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Think you've killed your sourdough starter? It is possible to revive sourdough starter - let me show you how!

The internet has way overcomplicated sourdough. It seems there are so many hoops you have to jump through to get that perfect loaf. Spoiler alert - you don't have to do all of that! 

And you don't have to be overwhelmed when thinking about whether you should try to revive your starter or make a new starter!

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I'm glad you're here because I'm going to show you how I made gorgeous bread with my starter that hadn't been touched in a year! (Or you could make sourdough pizza crust if you like!)

(And it took less than 48 hours, and about 10 minutes of hands-on time!)

woman looking at jar of sourdough starter with dark liquid on top

Neglected sourdough starter

Do you have an old starter in the back of your fridge? Are you overwhelmed with all the black liquid on top and think you've killed your starter?

Neglected starters can easily be revived with flour and water. All you need to do to get your starter back to its former glory is to give it a meal. (Aka, feed your starter.)

(When it's been revived, you can use my zero discard starter method - and never discard again!)

So pull out the starter in the fridge and let's learn how to revive an old sourdough starter and turn it into a healthy starter you can use for baking!

Watch my video tutorial on how to revive sourdough starter

Revive a sourdough starter in 36 hours

Discard hooch (or don't)

If your starter hasn't been fed in a very long time, you'll see a layer of liquid on top.

Normally, I don't discard the hooch (the dark liquid on top of the hungry starter), I just stir it back into the starter. But since this hadn't been touched in nearly a year, I did. Again, it boils down to personal preference.

That dark hooch will give your starter a very sour flavor.

old sourdough starter in jar

Feed a small amount of starter

First, I scraped off the top layer of the starter.

Then I measured out 10 grams of starter into a clean jar and then fed it with a 1:4:4 ratio.

This simply means I fed it 1 part starter, 4 parts flour, and 4 parts water.

10 grams sourdough starter

40 grams all-purpose unbleached flour

40 grams water

Put in a warm place and let it double

I put mine on the furnace in my utility room, where it is probably 75 degrees. 

It probably doubled overnight while I was sleeping, but in the video above, I show you what it looks like after about 23 hours.

Feed a second time

Repeat the process of a 1:4:4 feeding and let it double a second time. (Feed only 10 grams again; see the video above for what I did with the remaining starter.)

Mine doubled in only 3 hours, and I immediately used it to mix up sourdough bread!

doubled starter in glass jar

Sourdough starter from the fridge

I always keep my starter in the refrigerator and I never discard starter! I have a full video on YouTube about my zero sourdough discard method! (Spoiler: you don't have to feed your sourdough starter every day, week, or month!)

It saves me time, money, and energy, and keeps me sane!

Sourdough works on my schedule, not the other way around!

woman holding sourdough bread loaf
48 hours later

How to revive sourdough starter

Again, all you need to do to revive your starter is give it a good feeding. You can discard the liquid on top (or not - see above), scrape off that top layer of old starter, and then feed a small amount of starter with a 1:4:4 ratio.

You may need to feed it one more time to fully revive the starter. 

When your starter is doubling in 6-8 hours (or sooner), it is likely ready to use in sourdough baking!

I made this delicious loaf of bread with this starter - and the entire process (waking up the starter, bulk fermenting the bread dough, and cold proofing the dough) only took 48 hours!

What questions do you have about sourdough? Please visit my YouTube channel and check out my sourdough playlist, where I love to show people how EASY sourdough can be! (And we bust a few sourdough myths while we're at it!)

jar of starter with dark liquid and loaf of sourdough bread

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8 Comments

  1. Thank you so much! After a few failed attempts at waking up my starter, this worked!! I think I wasn’t feeding at a high enough ratio and also not being PATIENT enough (like waiting 24 hrs) in between feeds 😂 BTW… my starter was asleep for 18 months!! 😱 Thank you again!!!

    1. That's awesome! Yes, it takes a little more patience when waking up your starter - I'm so glad it worked for you! Happy baking!

  2. Thank you for the "reviving sourdough" tutorial...I'm trying it now! My question is do you do anything at this point with the original jar you had in the fridge for so long? I see you put it back in the fridge, but do you feed it prior to returning to the fridge or just put the whole jar back, same as it was when you removed it (minus the hooch!)? Do you keep this as a "backup jar" in case your "new" starter gets used up or ruined or ??? Thanks so much and I'm really glad to have found your site!

    1. Yes, I just put it back in the fridge and keep it as a back-up starter. (I didn't feed it before I returned it to the fridge.)