ziplock-type gallon bag to store my sour dough starter in the fridge.

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I am using a zip type gallon bag to store my sour dough starter in the fridge. Will it keep working after a week in storage? I take it out of the fridge the night before and feed it two cups flour and two cups lukewarm water.
Best Answer
One week is fine. I keep my starter also for one week in the fridge and feed it once a week:
- 20g starter
- 50g water
- 50g rye flour
If you want to do it for a longer period, I'd exchange the plastic for glass which is 100% safe from leeching nasty stuff into your starter.
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Can I put sourdough starter in a Ziplock bag?
Whisk flour and sugar together to keep it from clumping, add milk and yeast and stir together. You can store the starter in a ziplock bag (if you vent it) or a half gallon jar or crock. This is day one.Can you store sourdough starter in a plastic bag?
Most containers for sourdough starter are made from two materials: plastic or glass. Plastic selections can't shatter, so they're generally more durable than glass.How do you cover sourdough starter in the fridge?
You can cover it loosely with a lid, plastic wrap, or even a small cloth. I go back and forth depending on my mood. Keep in mind, the jar might burst if the lid is on too tight which means you'll run the risk of getting glass shards in the mixture.What should I store my sourdough starter in?
Medium-sized transparent glass jars and plastic containers with lids are ideal for sourdough starters. Additionally, jars and containers that have wide mouth tops make pouring starter out and feeding it an easier and cleaner process.Storing your Sourdough Starter in the FRIDGE | How to Guide
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Alexandra Maria, Angela Roma, Igor Ovsyannykov, Angela Roma