31/07/2025
Starter Maintenance Methods — The “Hybrid” Daily Maintenance Method
Starter maintenance methods have changed over the past five years, and most bakers now agree that keeping a starter at room temperature, and feeding two high-ratio feedings per day will keep your starter in optimal condition — ideally seeking a strong yeast population and low acidity.
However, many bakers struggle with the timing and practicality of twice-a-day feedings. Importantly, a poorly maintained starter at room temperature can end up in worse condition than a refrigerated starter.
REFRIGERATOR MAINTENANCE METHODS
A few months ago, I published this document which describes popular methods for maintaining a starter primarily in the refrigerator. These are all proven methods that work.
https://thesourdoughjourney.com/sourdough-starter-refrigeration-maintenance-methods/
I used various “refrigerator” methods in the past, but I still believe continuous maintenance at room temperature keeps my starter healthier. I’ve been maintaining my starter this way now, for over seven months — never refrigerated — with good results.
However, I often struggle with the timing of twice-a-day feedings, and I occasionally find my starter well past-peak before the next feeding. This can’t be the healthiest way to maintain a starter, but it is reality for busy people (especially in summer with warm kitchen temperatures).
THE “HYBRID” DAILY METHOD — COUNTERTOP AND REFRIGERATOR
Over the past month, I’ve been experimenting with an innovative new method for daily maintenance. Rather than two feedings per day at room temperature, I do one feeding in the morning, and let it rise at room temperature. As soon as the starter clearly peaks (or slightly after), I refrigerate the starter until the next morning. The next morning, I discard and feed again — letting the starter peak before refrigerating again.
This “hybrid” method uses countertop maintenance at room temperature AND refrigeration (without an additional feeding) each day — a once-a-day feeding regimen that covers 24 hours.
By feeding once per day, rather than twice per day, it eliminates (or reduces) the risk of your starter falling well past-peak before the next feeding. It also obviously reduces the amount of discard. Lastly, by focusing on one feeding per day, you can adjust the feeding ratio in the morning to accomodate your schedule and predict the best time to refrigerate the starter.
For example, If I will only be at home for a few hours in the morning, I’ll use a lower feeding ratio like 1:2:2 which will peak in 4 hours, so I can refrigerate my starter by noon. I then leave it in the refrigerator until the next morning.
If I am working away from the home and will return around 6pm, I’ll do a 1:5:5 or higher feeding ratio to stretch out the time to peak until I return at 6pm, at which time I refrigerate it until the next morning.
The starter spends whatever time it needs to peak at room temperature, then it spends the balance of the day in the refrigerator.
THE BENEFITS OF THE HYBRID METHOD
The timing convenience and reduced discard are obvious benefits of this method. However, based on recent tests I’ve performed, there are also unexpected performance benefits to periodically refrigerating your starter.
Most bakers do not recommend refrigerating your starter because long-term refrigeration can change the microbial mix and balance of your starter (some microbes die off at cold temperatures, and other thrive). However, short term refrigeration appears to actually strengthen a sourdough starter. Short term refrigeration appears to minimally impact yeast production, but significantly reduces the production of acids (which can accumulate and weaken your starter).
In various anecdotal examples and recent controlled tests, I’ve seen a hybrid-maintained starter perform BETTER than a countertop-maintained starter — with faster dough-rising times, and lower acidity.
I’ve run two types of test to date:
1) Using the hybrid starter directly from the refrigerator in dough in the a.m.
This method raises the dough slighly more slowly (for example, 8 hours versus 7 hours) as compared to the countertop starter, but the acidity level of the dough is lower which has some benefits.
2) Feeding the hybrid starter in the a.m. to create a leaven/starter for use in dough when it peaks at room temperature. Using the hybrid-maintained leaven at-peak in dough raises the dough faster and taller than the countertop method, and with lower acidity. This appears to be a stronger/better starter than the countertop-maintained starter.
I’ll continue running tests over the coming weeks. Stay tuned.
©️The Sourdough Journey 2025
SEEKING TESTERS
If anyone is interested in testing this method, I suggest keeping two separate starter samples for at least one week: 1) countertop maintenance feeding twice per day, and 2) hybrid method with one feeding per day that peaks at room temperature, then refrigeration for the balance of the day.
After one week, perform a side-by-side test a loaf made with the countertop-maintained starter and the hybrid-method starter.
You can use the hybrid starter a) directly from the refrigerator in your dough, or you can b) make a leaven with it and use it at peak at room temperature.
If you have questions, you can message me directly.ufh y