How to Store Your Sourdough Starter (Short-Term and Long-Term)

Your Starter Doesn't Have to Live on Your Counter Forever

One of the most common questions new sourdough bakers ask is: Do I really have to feed my starter every single day? The answer is no — not unless you're baking every day. Knowing how to properly store your starter gives you the flexibility to bake on your schedule, not your starter's.

Here's everything you need to know about short-term and long-term sourdough starter storage.

Short-Term Storage: The Refrigerator Method

For most home bakers who bake once or twice a week, refrigerator storage is the ideal approach.

How to Do It

  1. Feed your starter as normal using your 1:1:1 ratio.
  2. Let it sit at room temperature for 1–2 hours (or until it begins to show some activity).
  3. Cover loosely and place in the refrigerator.

In the fridge, fermentation slows dramatically. Your starter can go 5–7 days between feedings without harm.

How to Reactivate It Before Baking

  1. Remove from the refrigerator 1–2 days before you plan to bake.
  2. Discard down to 50g and feed with fresh flour and water.
  3. Repeat once or twice until the starter is doubling consistently and smells pleasantly tangy.
  4. Bake when it's at peak activity.

Long-Term Storage: Freezing Your Starter

Planning a long trip? Going months without baking? Freezing your starter is a reliable way to pause it indefinitely.

How to Freeze

  1. Feed your starter and let it reach peak activity.
  2. Spread a thin layer on parchment paper and let it dry completely (1–2 days), or freeze directly in a container.
  3. Store frozen starter in an airtight bag or container. It will keep for months to years.

How to Revive a Frozen Starter

  1. Thaw at room temperature.
  2. Feed with flour and water at a 1:1:1 ratio.
  3. Repeat feedings over 2–3 days until the starter is reliably active again.

Heritage starters like our 233-Year-Old San Francisco Starter have survived far more than a freezer. Their resilience is one of the great advantages of a well-established culture.

Dried Starter Storage

Another excellent long-term option is drying your starter:

  1. Spread freshly fed, active starter thinly on parchment paper.
  2. Let air dry at room temperature for 2–3 days until completely dry and brittle.
  3. Break into flakes and store in an airtight container away from heat and light.

Dried starter can be stored for years and makes a great backup. To rehydrate, mix the flakes with equal parts water, wait 30 minutes, then begin feeding as normal.

Signs Your Stored Starter Needs Attention

  • Dark liquid (hooch) on top: normal — just feed it
  • Strong vinegar or acetone smell: normal if very hungry — feed it
  • Pink, orange, or fuzzy growth: discard immediately and start fresh

For more detail on diagnosing issues, see our Sourdough Starter Troubleshooting Guide.

New to Sourdough? Start Here

If you don't yet have a starter, our collection of living heritage sourdough starters are a wonderful place to begin. They arrive active and ready to use — and with the right storage habits, they'll be baking alongside you for generations.

Also check out our Traditional Starter Feeding Instructions and our What is a Starter? page for more foundational knowledge.

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