How to Maintain a Room-Temperature Sourdough Starter

What You Will Need

Healthy Established Sourdough Starter

Flour:

• All-purpose flour works well for feeding.
• Whole wheat or rye flour can boost activity if the starter seems sluggish.

Water: I prefer using filtered or unchlorinated water when feeding my starter. If you're having trouble getting your starter to become active, your water source is one variable worth considering.

If your tap water contains chlorine, allowing it to sit uncovered may help the chlorine dissipate. Chloramine, however, doesn't dissipate as easily, so filtered water may be a better option.

Visit the Environmental Protection Agency's website to view your local Consumer Confidence Report.

If you must use city water, let it sit out overnight before adding it to your sourdough starter. This length of time should be sufficient to allow the chlorine to dissipate.

If your city uses chloramine, leaving the water out on the counter won't do much. It is best to stick with filtered water.

A Clean Jar or Container with a Lid: I like to use 1-quart glass canning jars.

Digital Scale: When baking and creating a sourdough starter, accurate measurements are important.

The absolute easiest way to maintain this ratio is to always use a digital kitchen scale to measure your ingredients. When starting and maintaining a sourdough starter, accuracy matters. Weight measurements are more accurate than volume measurements.

This scale from OXO is the one I use after it was recommended by Alton Brown. What makes this scale great is that the display pulls out to make viewing measurements easier when using a large bowl.

Rubber Band: A rubber band is useful for marking the height of your starter so you can keep track of how much it has risen since its last feeding.

For more information, check out my blog post on choosing the best containers for storing sourdough starters.

I also have a sourdough gift guide that lists all of my favorite sourdough products.

How to Feed a Room Temperature Starter

To keep your starter healthy, it should be fed at least once a day. In warmer weather, you may need to feed it twice per day. Here's a simple feeding routine:

Signs of a Healthy Starter

• Bubbly and Active: Your starter should rise and fall predictably after each feeding.
• Mildly Tangy Aroma: A healthy starter smells pleasantly sour, slightly yeasty, and not overly acidic.
• Doubling in Size: A well-maintained starter should double in volume within 4-6 hours after feeding.

Troubleshooting Common Sourdough Starter Issues

• The starter is Too Runny: Add slightly more flour or use bread flour or another high-protein flour to help create structure to maintain a thicker consistency.
• Not Bubbling or Rising: Your starter may be underfed or kept in a too-cold environment. Increase feeding frequency or move it to a warmer spot {70-75°F (21-24°C) is ideal}.
• Overly Sour or Hooch Formation: If liquid (hooch) collects on top, your starter is hungry. Stir it in or pour it off and feed more frequently.
• Mold or Off Smells: If your starter develops mold or smells rotten, discard the entire starter-it's unsafe to use. This is one of the reasons I keep a dehydrated starter on hand as an insurance policy.

Adjusting for Different Baking Schedules

Room-temperature storage works best when you bake frequently enough to benefit from keeping your starter continuously active. If you find yourself regularly skipping feedings or going several days between bakes, refrigeration or another lower-maintenance method may be a better fit.

Not sure which approach works best for your baking schedule? Take my Sourdough Starter Storage Quiz to compare your options.

FAQs