✦ The Starter Guide ✦
"All you need is flour, water, and patience, darlin'. Your starter will do the rest."
A sourdough starter is a living culture of wild yeast and bacteria that you grow at home using nothing but flour and water. It's the leavening agent that makes sourdough bread rise — no commercial yeast needed.
The wild yeast produces carbon dioxide (which makes the bread rise) and the bacteria produce lactic and acetic acids (which give sourdough its signature tangy flavor). Together they create something no commercial yeast can replicate.
"Think of her as a pet, sugar. Feed her regularly, keep her comfortable, and she'll take care of you for years."
In a clean jar, mix 50g of flour and 50g of room temperature water until no dry flour remains. Cover loosely — she needs air to breathe. Leave her somewhere warm, around 70-75°F.
"Use a rubber band to mark where she starts. That way you can see if she's risen, sugar."
Nothing much yet. She might look lumpy and smell like raw flour. That is perfectly normal.
Discard all but 50g of your starter. Feed with 50g flour and 50g water. Repeat this every 24 hours. Keep her in that warm spot.
"Don't throw away the discard — save it in a separate jar in the fridge. You can use it for pancakes even this early."
You might see some bubbles forming. She might smell a little funky — almost like cheese or acetone. This is normal and temporary.
Keep discarding and feeding every 24 hours. If she is rising and falling predictably, try feeding twice a day — once in the morning and once at night.
"If she smells like nail polish remover, she's too hungry. Feed her more frequently, darlin'."
Bubbles throughout, a domed top, and a more pleasant yeasty or tangy smell. She should be doubling in size within 4-8 hours of a feeding.
Drop a small spoonful of your starter into a glass of water. If it floats, she is ready to bake with. If it sinks, keep feeding for a few more days.
"The float test isn't perfect — some healthy starters sink. The best sign is consistent doubling within 4-6 hours of feeding."
A mature starter smells pleasantly sour and yeasty, doubles reliably, and has a domed top with lots of bubbles when at peak.
Most starters are ready to bake with in 7-14 days, but some take 3-4 weeks. Temperature, flour type, and the wild yeast in your environment all play a role. Don't rush her, honey.
All-purpose or bread flour works great for beginners. Adding a tablespoon of whole wheat or rye flour speeds things up — those flours have more wild yeast and nutrients. Check our Flour Guide for more detail.
Almost certainly not. Young starters go through a smelly phase — acetone, cheese, even vomit smells are all normal in the first week. Keep feeding and she'll come around. Check the Starter Troubleshooter if you're worried.
That's hooch — a layer of alcohol produced when your starter is hungry. It's gray or dark in color, not fuzzy. Just stir it in or pour it off and feed her. Mold is fuzzy and colorful (pink, orange, black). If you see actual mold, scoop it out and hope for the best.
Once established, keep her in the fridge and feed once a week. Take her out the night before baking, feed her, and let her come to peak activity at room temperature before using.
Usually yes. Discard most of it, feed what's left, and give her a few days of regular feedings to wake back up. Starters are more resilient than you think, sugar.
Name her, log her feedings, and watch her grow — right here in Bless Your Loaf.
Start Free Today →