Pearl Maintenance Day — My Sourdough Starter Is Making Hooch (And That’s Okay)

Pearl maintenance day is a Saturday morning ritual around here — and this week when I pulled her out of the fridge, she had hooch again. That grayish liquid sitting on top of a sourdough starter freaks a lot of people out the first time they see it, but I promise it is completely normal. Hooch just means your starter got hungry. If it is under an inch, you can mix it right back in. If it is over an inch, she needs a little extra water and a feed before she is back on track. Either way, it is not a sign something went wrong.

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This week’s pearl maintenance day came with a new development: I have officially split Pearl into two jars. Pearl 1 and Pearl 2. My plan is to alternate baking weeks between them — one week Pearl 1 bakes, the next week Pearl 2 bakes — so each one gets a full week to rest and build strength between bakes. And if I ever want to do a big bake and need extra starter, I have got both of them ready to go. I like having that backup. It just makes me feel better about the whole thing.

For today’s pearl maintenance day, Pearl 1 is getting the weekly fridge maintenance feed — nothing fancy, just the standard protocol. I pull her out, mix the hooch back in, discard down to 100 grams, then feed her equal parts flour and water. One to one to one. She goes back out on the counter for two hours to wake up a little, then back in the fridge for the week. Pearl 2 gets a one to two to two feed and stays out on the counter to rise, because she is going to bake tomorrow. Two starters, two different jobs, same Saturday morning routine.

I also have this little thing I do — and yes, I know it is maybe a little silly — but when I feed Pearl, I warm up her clean jar first with the water before I transfer her in. It just feels like a nice thing to do. She has been sitting in the cold fridge all week, and something about putting her into a warm jar feels like a welcome back. I don’t know if it actually helps. But she keeps making great bread and I am not changing anything. That is my logic and I am sticking to it.

If you are maintaining a sourdough starter and wondering about the hooch, the split jar system, or just how to keep an established starter healthy week to week, this is exactly where we are in the journey. Pearl has been going strong for a while now and the routine is second nature at this point — pull her out, check for hooch, feed her, warm jar, back in the fridge. Saturday in and Saturday out. She has never let us down. King Arthur Baking’s sourdough guide explains the science behind hooch beautifully — it is simply the alcohol produced by wild yeast fermentation, normal, harmless, and easy to deal with.

Pearl Maintenance Day FAQ — Your Sourdough Questions Answered

What is the liquid on top of my sourdough starter?

That liquid is called hooch, and it is completely normal. Hooch is the alcohol produced by the wild yeast in your starter as it ferments. It forms when your starter has gone a while without being fed — it is basically your starter’s way of telling you she is hungry. It is not mold, it is not dangerous, and it does not mean anything is wrong. It just means it is feeding time.

Should I stir the hooch back in or pour it off?

Either way is fine. I stir mine back in every time. The alcohol can actually add a little extra tang to the flavor, and as long as the hooch layer is under about an inch, you are good to go. If it is over an inch — or if it has turned very dark — your starter is really hungry. Pour it off, add a little extra water, and do a feed before you use her for baking.

How often should I feed my sourdough starter?

For a refrigerator starter like Pearl, once a week is the sweet spot for maintenance. Pull her out Saturday morning, do your 1:1:1 feed (equal parts starter, flour, and water by weight), leave her on the counter for about two hours to wake up, then back in the fridge. If you are baking that week, do a proper baking feed the morning of your bake day instead — discard more aggressively, feed heavier, and let her rise fully before mixing your dough. I use King Arthur Bread Flour (Shop at King Arthur) for every Pearl feed — the consistent protein content matters when you are building a starter’s strength week over week.

Can I split a sourdough starter into two jars?

Yes — and it is actually a great idea once your starter is established. I split Pearl into Pearl 1 and Pearl 2 so I can alternate baking weeks between them and always have a backup ready for a big bake. Both jars get the same weekly feed on the same schedule. The only difference is which one I pull for baking on any given week. Think of it as a built-in insurance policy for your sourdough routine.

What is the 1:1:1 feeding ratio for sourdough maintenance?

It means equal parts starter, flour, and water by weight. So if you keep 100 grams of starter, you feed it 100 grams of flour and 100 grams of water. For a fridge maintenance feed like pearl maintenance day, this is all you need. Use a kitchen scale — eyeballing sourdough measurements leads to inconsistent results, and the scale is the one tool I would never skip.

Pearl Maintenance Day — Tools I Use Every Week

More From the Sourdough Journey

If you are following along with Pearl and Free Willy 2, here are a few more posts you might enjoy:

• Pearl Prettiest Bake Yet — Sourdough Sandwich Bread That Keeps Getting Better — the bake that proved Pearl had hit her stride.
• Free Willy 2 First Loaf — Whole Wheat Sourdough Sandwich Bread — Jason finally got his sandwich bread. Four ingredients and a loaf pan.
• Sourdough Day 1: Starting a Sourdough Starter From Scratch — where this whole journey began.

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Pearl Maintenance Day — About Stephanie’s Sourdough Journey

This post is part of Stephanie’s Sourdough Journey — an ongoing series following Pearl (Stephanie’s established all-purpose starter, a gift from her friend Sara) and Free Willy 2 (a whole wheat starter converting to support Jason’s Mediterranean diet). Two starters, one kitchen, endless learning. Start from the beginning at Sourdough Day 1.