Sourdough Home & Starter Jar

Absolutely. Just set the Sourdough Home to a warmer temperature (around 76–78°F / 24–26°C) to keep your starter active and ready to use daily.

You can—but fridge temperatures are usually too cold (around 38°F / 3°C). That often weakens your starter and requires extra feedings to revive it. The Sourdough Home keeps your starter cool but still active, so it’s healthier and ready to bake with when you are.

The Sourdough Home heats and cools, while the Folding Proofer only heats. That means the Sourdough Home can hold your starter below room temperature to slow fermentation. It’s also more compact and designed specifically for starter jars up to 1 liter (1 quart). The Folding Proofer is larger and better suited for proofing dough or bulk fermentation.

The Sourdough Home fits jars up to 1 liter (1 quart). It works with most standard glass jars, including Weck and Ball. Want the perfect fit? Check out our Sourdough Starter Jar

Yes! The Sourdough Home works with all types of starters—gluten-free, rye, whole wheat, and more. Temperature is key, no matter what flour you use.

Not at all. Just set your desired temperature and let it run. The Sourdough Home maintains a stable environment with no babysitting required.

The time to reach the set temperature depends on the amount of starter and its initial temperature. To speed things up, feed your starter with water close to your set temperature (warm or cool, depending on the target). The Sourdough Home is a low-power unit, so plan for slower transitions, especially for big temperature changes.

The Sourdough Home is designed to keep your starter within an optimal range—within 1–3°F of the set point. That slight variance is normal and doesn’t affect performance. What matters more than the exact number is how your starter behaves: is it rising well? Bubbling? Smelling pleasantly sour? If yes, then your starter is thriving—even if the thermometer shows a small difference.

Use a digital probe thermometer inserted directly into the starter after it’s been in the unit for a few hours. Measuring the air inside won’t give you an accurate reading.

Anywhere with stable room temperature works—like a kitchen counter. Avoid placing it next to ovens or in direct sunlight, and allow a few inches behind the unit for airflow.

This can occasionally happen if the gasket has been removed or exposed to moisture. When that occurs, the material can expand slightly and may not sit back into the channel as easily.

You’re welcome to try reinstalling it by starting at one corner and gently working it back into place. The ends of the gasket should meet end to end in the channel. In some cases, the gasket may seem a bit too long after expanding, if that happens, you can carefully trim a small amount from the end so it fits properly. A very small dab of household adhesive at one end can also help hold it in place if needed.

If it still doesn’t fit correctly, we’re happy to provide a replacement gasket. Please contact our Customer Service team directly and we’ll take care of you.