Sourdough Starter Not Rising After 7 Days: What to Do Next
A starter that is still flat at day seven is usually young, hungry, thin, or cold — not dead. Read your jar against the decision tree and the jar check, then work the fixes in order. Most first-week starters that get the same weighed feed in a warmer spot start climbing.
The fast answer
A starter that has not risen after seven days is usually not dead. In the first week the culture is still building, and three things stall it most often: a feed that keeps changing, too much water for the flour in the jar, or a spot that is too cool. Keep one weighed feed, match the texture to the flour, and move the jar somewhere warm — then judge the rise after each feed instead of how the jar looks between them.
Work down this list and stop at the first line that matches your jar:
- It bubbles, but it never grows.The culture is alive; it is just not holding the gas it makes. Read the jar check, then work the fix sequence.
- It is thin and separates within hours of a feed.There is too much water for the flour in the jar. Thicken it at the next feed and keep every feed equal by weight.
- Nothing happens at all, and it smells like nothing.It is under-fed, too cool, or both. Feed by weight on a fixed rhythm and move the jar somewhere warmer before you change anything else.
- It has fuzz, colored growth, or pink and orange streaks.Stop. Do not feed it, do not taste it, and do not bake with it — see Edge cases and when to stop.
If your jar is simply young and quiet, that is the ordinary first-week picture, not a failure. Give it several more days on the same feed before you decide anything about it.
Start here: the day-seven decision tree
Answer one question at a time and stop at the first branch that fits. Each branch ends in one next move.
The 60-second jar check
Six things to look at, in this order. This is the same read a baker does before deciding whether a starter is ready for dough.
Fix it in order
These steps assume the jar shows no fuzz, colored growth, or pink and orange streaks. Each step tells you what to do and how to tell it is working.
Stop changing one thing every day
First-week starters go wrong most often because the feed keeps changing — a different flour, a different amount, a different jar. Pick one weighed feed and repeat it exactly, even if the jar looks quiet.
Feed by weight, on a fixed rhythm
The site's sourdough starter guide feeds about 100 g of starter with 100 g flour and 100 g water — an equal-weight feed — and it also records a 2:1:1 adjustment in starter : flour : water. Weighing makes the feed repeatable, because the same cup of flour can weigh different amounts on different days.
Match the texture to the flour
Add flour a spoonful at a time and stir it through. Stop when the starter holds a soft mound instead of running straight off the spoon. Different flours take up water differently, so judge the texture in the jar rather than a fixed amount.
Give it warmth, and check it honestly
Cold slows fermentation, and a starter that is merely cold looks exactly like one that is doing nothing. Find the warmest draft-free spot in your kitchen — away from open windows, air-conditioning vents, and cold stone counters — and check the jar's temperature with a thermometer instead of guessing. If you use a warming mat, a proofing box, or an oven with the light on, follow that appliance's manufacturer instructions, and never leave a starter in an oven you are also using for something else.
Watch for the peak, not the bubbles
Feed at about the same time each day, then look at the jar through the hours that follow. Doubling in 4 to 8 hours after a feeding is the readiness benchmark used in this site's sourdough starter guide. If your starter climbs and then falls before you check it, it is peaking earlier than your rhythm — feed it sooner or in a larger proportion of fresh flour and water.
Repeat for several days before you judge it
One good feed does not rebuild a first-week culture. Several weighed feeds in a row, on the same rhythm, tell you far more than a single large one. Keep the discard in a separate jar if you want to bake while you wait.
Common mistakes
Most day-seven starters stay flat because one of these keeps happening.
A new jar restarts the same clock. If there is no fuzz, colored growth, or pink and orange streaking, the culture you already have is further along than a fresh one.
A large unmeasured feed changes the ratio between starter and food, so the next feed is no longer comparable to the last one and you lose the only measurement you had.
A freshly fed starter is loose and quiet for a while, because the flour has not taken up the water yet. That is not the same thing as a starter that cannot rise.
A cold counter slows everything down. A starter that is simply cold can look identical to one that is doing nothing at all.
Each of those forces a result you can see without telling you whether the culture can lift a loaf on its own, and added sugar or honey changes what you are actually feeding.
Timelines written for another kitchen do not describe your kitchen. The jar in front of you is the instrument, and it reports in rise and smell rather than in days.
Edge cases and when to stop
Some day-seven jars need a different answer, and one of them means the starter is finished.
Flours take up water differently, so a starter can look thinner, thicker, or slower right after a switch. That is a change in the jar, not necessarily a change in the culture.
A culture that has been cold or has traveled is slow to wake. It needs feeds and warmth before it behaves like a starter kept at room temperature.
Season and room matter more than the calendar. In a cool room the same feed can take much longer to show a rise, so judge the jar over a longer window instead of concluding it is dead.
An uncovered jar dries at the surface and collects whatever is in the air. Cover it loosely, scrape the sides down, and feed as usual.
A starter that has not doubled will not lift a loaf, but the discard still has a job in discard baking while the jar rebuilds.
Throw the whole jar away. Do not scoop around it, do not try to feed it back, and never taste a starter that looks or smells wrong. Start fresh in a clean jar.
When to stop instead of fixing
If you are not sure whether a starter is safe to use, throw it out rather than guessing. Nothing on this page replaces your own judgment about food safety — if you have any doubt at all, stop and ask a qualified professional or your local food safety authority. If you use a scale, thermometer, warming mat, proofing box, or any appliance while working through these steps, follow that device's own manufacturer instructions. If a device behaves unexpectedly, if the jar feels hot, or if you are not sure the setup is safe, stop and check the official manual or ask a qualified professional.