Proof & LoafHow to Store Sourdough Starter in the Fridge (and While You Travel)
You don’t have to feed a starter every day forever. Kept in the fridge, it needs about one feed a week, and with a little planning it will happily wait while you travel for the holidays.
How we chose: we compared manufacturer specs, independent test-kitchen results and owner feedback. We haven’t hands-on tested these products ourselves. Our methodology.
Quick answer
- Yes, you can keep sourdough starter in the fridge. Feed it, let it get bubbly for an hour or two, then refrigerate it in a jar with a loose or vented lid.
- Feed it about once a week while it lives in the fridge. A healthy, established starter often survives two to three weeks without a feed, and sometimes longer.
- Going away for the holidays? Give it a stiffer feed (more flour, less water) before you leave; it ferments more slowly and holds up better.
- Waking it up: pour off any grey liquid, discard most of it, and give it one to three room-temperature feeds until it rises predictably again.
Fridge or counter: which suits you?
A starter on the counter usually needs feeding once or twice a day. In the fridge it slows right down, so a weekly feed is enough. If you bake every day or two, the counter is easier. If you bake on weekends, or less, the fridge saves a lot of flour and effort.
Many beginners keep their starter on the counter for the first few weeks, until it rises reliably, and then move it to the fridge. A brand-new starter that still isn’t doubling usually does better at room temperature; our starter not rising guide covers that stage.
How to store starter in the fridge
- Feed it as usual and let it sit at room temperature for an hour or two, so the yeast and bacteria get going before the cold slows them down.
- Use a clean jar with room to grow. It will still rise a little in the fridge. Leave the lid loose, or use a lid that isn’t airtight, so gas can escape.
- Mark the level with a rubber band or a strip of tape and write the feeding date on the jar. That way you know at a glance how old the feed is.
- Keep it toward the back of the fridge, away from the door, where the temperature is steadier.
How often to feed a refrigerated starter
About once a week is the usual rhythm. To feed it, take out the jar, discard all but a small amount (say 20–50 g), add fresh flour and water, leave it out for an hour or two, and put it back. Weighing the feed with a scale keeps the ratio the same each time, which makes the starter more predictable.
Missed a week? Don’t worry. Established starters are tough. A layer of grey or brown liquid on top (often called “hooch”) just means it’s hungry. Pour it off, or stir it in if you like a more sour flavor, and feed as normal.
Leaving starter while you travel
Holiday travel is when a lot of starters get neglected. A few simple options, from easiest to most robust:
- Away for one to two weeks: feed it the day before you leave and refrigerate it. That’s usually all it needs.
- Away for two to four weeks: give it a stiff feed, roughly twice as much flour as water by weight. A thick, dough-like starter ferments more slowly in the fridge.
- Away longer, or as a backup: spread a thin layer of active starter on parchment, let it dry completely at room temperature, break it into flakes and store them in an airtight jar. Dried starter keeps for months and can be revived with flour and water. It’s also a lovely way to gift sourdough starter.
- Ask a friend: a jar and a note with feeding amounts is all a willing neighbor needs.
How to wake up a starter from the fridge
- Take it out and pour off any liquid on top.
- Discard all but a small amount and feed it with fresh flour and water at room temperature.
- Watch it. A starter that’s been in the fridge a week often bounces back after one feed. After a long break, it may take two or three feeds over a day or two before it rises reliably.
- Use it when it rises predictably and smells pleasantly tangy, not sharply of nail polish remover (a sign it’s still very hungry).
Some bakers use starter straight from the fridge for a long, slow overnight dough. It works, but the dough rises more slowly, so give it extra time and judge the dough rather than the clock.
When to throw it out
Liquid, a strong sour smell and a flat starter are all normal after time in the fridge. Pink, orange or red streaks, or fuzzy mold on the surface, are different: most bakers advise throwing the whole thing out and starting again (or reviving a dried backup), rather than trying to scrape it off.
Gear that makes fridge storage easier
You don’t need anything special, but a few things help.
Ball Wide Mouth Half Pint Jars (8 oz, 4 per box)
Small, wide-mouth jars are easy to scrape out and take up little room. A small fridge starter (20–50 g) fits comfortably, and spare jars are handy for a dried backup or a gift.
- Wide mouth is easy to clean
- Spares for backups and gifts
- Small for a big counter starter
- Screw the lid on loosely
Weck 743 Mold Jar (3/4 L, box of 6)
Straight sides make it easy to see how much the starter has risen after a feed, and the glass lid rests loosely so gas can escape. See our starter jar guide for more options.
- Straight sides show the rise
- Lid isn’t airtight
- Takes more shelf space
- Clips are easy to lose
Escali Primo Digital Food Scale
Weighing the starter, flour and water keeps your feeding ratio consistent from week to week, which is the simplest way to make a fridge starter predictable.
- Reads in grams
- Simple and compact
- Not as precise for tiny amounts as a jeweler’s scale
A silicone or rubber dough scraper is also handy for getting every last bit of starter out of the jar before a clean feed.
Setting up from scratch? Start with our beginner kit list. Starter slow after a cold spell? Try the free fixes in sourdough starter not rising.
Frequently asked questions
How long can sourdough starter stay in the fridge without feeding?
An established starter often survives two to three weeks without a feed, and sometimes much longer. It may need a few room-temperature feeds to bounce back.
How often should I feed my sourdough starter in the fridge?
About once a week is the usual rhythm for a refrigerated starter.
Should I feed my starter before putting it in the fridge?
Yes. Feed it and leave it out for an hour or two so it gets going, then refrigerate it.
What is the liquid on top of my sourdough starter in the fridge?
It is alcohol and water from a hungry starter, often called hooch. Pour it off or stir it in, then feed the starter.
Can I use sourdough starter straight from the fridge?
You can for a slow overnight dough, but it will rise more slowly. Most bakers give it a room-temperature feed first.
Related guides
The Best Sourdough Starter Jars (and What Makes One Good)
Straight sides, wide mouth, loose lid: how to choose a jar for your starter, and the jars bakers rely on.
TroubleshootingSourdough Starter Not Rising? 8 Common Causes and Fixes
Why a sourdough starter stops rising or doubling, from a cold kitchen to the wrong ratio, and a simple plan to get it active again.
DIY giftHow to Gift Sourdough Starter: Jar, Label and Instructions
How to pack, label and give sourdough starter as a gift, with a copy-ready feeding card and tips for mailing dried starter.
Beginner kitSourdough Starter Kit for Beginners: The Tools You Actually Need
The short list of tools that make your first sourdough easier, and the things you can skip.
First published . Browse all sourdough gear guides.