How I Feed My Sourdough Starter (And Why I Stopped Doing 1:1:1)

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If you’ve ever gone down the sourdough rabbit hole, you’ve probably seen the standard advice: feed your starter equal parts starter, water, and flour. A 1:1:1 ratio. Simple, clean, easy to remember.

I did that too, for a while. And it works. But once your starter gets strong, that ratio just doesn’t cut it anymore.

Meet Janet. She’s my sourdough starter, and she has been with me long enough to have a personality, a home, and honestly a little bit of an attitude. This is how I feed her, why I feed her the way I do, and some things I had to figure out on my own that I really wish someone had told me at the beginning.

This post covers how to feed sourdough starter for everyday maintenance and for getting her ready to bake, so you always know exactly what you are doing and why.

What You Need Before You Start

And then there’s Janet’s home. This is probably my favorite sourdough purchase I’ve ever made. It’s a small mini warmer, also called a Sourdough Home, that I keep set to 70 degrees. Consistent temperature is one of the biggest factors in predictable starter behavior, and this little thing changed my baking life. Instead of chasing warm spots in my kitchen or stressing when the house is cold in winter, I just open the door, put her in, and know exactly what I’m working with.

The Fridge Cheat Sheet That Saves Me Every Single Day

It may seem like a lot of math at first but you get used to seeing certain numbers, and the cheat sheet on the fridge does most of the remembering for you. Trust me, math has never been my strong subject, but this has worked for me.

Once you know your jar weights by heart, the whole process gets faster. No hunting around, no second-guessing, no starting over because you forgot to zero out before adding your starter. It’s a small habit that makes a real difference.

Do You Need to Change the Jar Every Day?

This is one of those things nobody talks about, and I really want to address it directly because it caused me a lot of unnecessary stress when I was starting out.

No. You do not need to change your starter’s jar every single day.

In fact, I’d argue you shouldn’t. Here’s why.

Sourdough is a living culture of wild yeast and good bacteria. It does not need a sterile environment to thrive. Quite the opposite, actually. That jar that looks a little messy on the inside? The dried bits of starter clinging to the sides? That’s not a problem. That’s just evidence that something alive lives there.

What IS a problem is introducing chemicals into your starter from an improperly rinsed jar. Even a tiny bit of dish soap or cleaner residue left behind can kill the very bacteria you’ve worked so hard to cultivate. Losing a strong, active starter because of a well-intentioned jar washing is genuinely devastating, and it happens more than people talk about.

I change Janet’s jar every three to four days, or when it gets to the point where it really needs it. When I do wash the jar, I rinse it extremely thoroughly and make sure there is no soap residue left behind before I transfer her back. A daily jar change is not only unnecessary, it’s an extra risk you don’t need to take.

This is also exactly why the fridge cheat sheet matters so much. Because you are NOT starting with an empty jar every day, knowing the weight of the jar you are already working in is what lets you calculate your starter amount accurately without having to change anything.

How to Feed Sourdough Starter (Step by Step)

Now that you understand the jar situation, here is how a regular feeding day actually looks for me.

I put Janet’s jar on the scale and note the total weight. Using my cheat sheet, I subtract the jar weight to find out how much starter I have. On a typical day I want to keep 35 grams of starter, so I remove whatever amount gets me down to 35g in the jar.

Once I have my 35 grams of starter sitting in the jar, I add 105 grams of filtered room temperature water. Then I add 105 grams of flour. That gives me a 1:3:3 ratio, meaning Janet gets three times her weight in both water and flour.

A quick note on water: I have well water, so I don’t have to worry about chlorine in my tap water. If you are on city or county water, I would not risk it – chlorine can kill the good bacteria in your starter, and that is the last thing you want after all the work you’ve put into building it. Instead, grab a jug of spring water, let it sit out until it reaches room temperature, and use that for your feedings. Simple fix.

I stir it all together until there are no dry flour pockets left. Then I put a rubber band around the outside of the jar right at the level of the fresh starter. That rubber band is your best friend. It is how you track the rise without hovering over her constantly.

Then she goes into her Sourdough Home at 70 degrees and I leave her alone to do her thing.

Why I Feed a 1:3:3 Ratio

Knowing When She’s Ready

If you miss the window and she starts to fall back, don’t panic. You can still use her, especially for discard recipes. Or just feed her again and wait for the next rise.

Once you understand how to feed sourdough starter at the right ratio for your schedule, the whole process starts to feel like second nature.

What to Do With the Discard (And One Drain Tip Nobody Tells You)

Let’s talk about discard for a minute, because this is another area where I see beginners get overwhelmed.

First, save your discard whenever you can. There are so many recipes that use sourdough discard and none of it has to go to waste. Crackers, pancakes, waffles, muffins; discard is a gift, not a problem.

Here are a few that I love:

• Sourdough Peanut Butter Hawaiian Cookies
• Sourdough Oatmeal Raisin Cookies Recipe
• Sourdough Cinnamon Rolls

But here’s something that used to stress me out that I want to address directly. When you are washing out your starter jar or rinsing a spatula, you are putting live bacteria down your drain. I had sourdough people online absolutely convince me I needed to buy little mesh drain covers to catch every last bit that went down the sink. I bought them. I hated them. They took up more time and irritated me every single time I used them.

Here is what I actually do, and what has kept my drain clear for years: a splash of white vinegar down the sink every couple of days, or at least once a week. Vinegar helps neutralize the live bacteria and keeps anything clinging to your pipes from building up into a clog. I am not a plumber, and I am not making any guarantees, but this simple habit has worked for me and I have never had a sourdough-related drain issue.

Skip the mesh covers. Buy a big bottle of white vinegar. You’re welcome.

The Honest Truth About Starter Maintenance

Once you get a rhythm, feeding your starter takes maybe five minutes. The learning curve feels steep at first, but most of it is just paying attention. Watch the rise. Smell it. Notice when she peaks on a warm day versus a cool one. The starter will teach you if you let it.

The things I wished someone had told me when I started; don’t change the jar every day, don’t panic about the drain, control your temperature, know your jar weights… none of them are complicated. They’re just not talked about enough.

Janet has been through a lot of feedings at this point, and she just keeps getting stronger. That’s the beauty of a well-maintained starter. You put in the small consistent effort, and it compounds over time.

Just like most good things do.