Bringing your dried sourdough starter back to life is a simple process that requires just a little patience and consistent feeding. Follow these steps to reactivate your culture:

Phase 1: The Awakening

1. Soak: Combine 1 teaspoon of dried starter with 1 tablespoon of lukewarm, untreated water in a small glass jar. Let it sit for several minutes until the starter has softened.

2. Initial Feed: Stir in 1 tablespoon of unbleached flour (all-purpose, rye, or whole wheat).

3. Rest: Cover the jar loosely with a lid and leave it at room temperature for 24 hours.

Phase 2: Encouraging Activity

1. Second Feed: After the first 24 hours, stir in 1 tablespoon of flour and 1 teaspoon of water.

2. Observe: Let the mixture rest for another 24 to 36 hours. Look for signs of life, such as small bubbles or a slight change in aroma.

   Note: If there is no visible activity after 36 hours, the environment may be too cold, or you may need to restart the process.

Phase 3: Building Strength

1. The Boost: Once bubbles appear, add 1/3 cup of flour and 1/4 cup of water.

2. Daily Maintenance: Continue feeding the starter once daily. To increase the volume for a specific recipe, you can double or triple the amount of flour and water during each feeding.

3. A Pro-Tip on Precision: For the best results, we recommend feeding by weight (equal parts flour and water) rather than volume once the starter is fully active.

Phase 4: Long-Term Storage

Once your starter is consistently bubbly and active, it is ready for the "long haul":

• Storage: Store in a glass jar with a tight-fitting lid in the refrigerator.

• Maintenance: A weekly feeding is all that is required to keep your refrigerated starter healthy and ready for your next bake.

Frequently Asked Questions: Sourdough Rehydration

How long does it take to fully rehydrate a starter?
Typically, it takes 2 to 5 days for a dehydrated starter to become bubbly and active enough for baking. Factors like room temperature and the initial health of the dried culture can influence this timeline.

What kind of water should I use?
Use lukewarm, untreated water (ideally between 80°F and 90°F). Filtered water is preferred, as the chlorine or heavy minerals sometimes found in tap water can inhibit the growth of the wild yeast and beneficial bacteria.

Why isn't my starter bubbling after 24 hours?
It is completely normal to see no activity in the first 24 to 48 hours. The dormant yeast and bacteria need time to "wake up" and begin feeding. If your kitchen is cool, try moving the jar to a warmer spot, such as the top of the refrigerator or inside a turned-off oven with the light on. 

What is the liquid on top of my starter?
A thin layer of dark or clear liquid is called "hooch." This is a natural byproduct of fermentation and usually indicates that your starter is hungry and needs to be fed. You can simply stir it back in or pour it off before your next feeding. 

How do I know when my starter is ready to bake with?
Your starter is ready when it consistently doubles in size within 4 to 8 hours after a feeding and is filled with bubbles throughout. It should also have a pleasant, slightly tangy or fruity aroma.

Can I use any type of flour for rehydration?
Yes, any unbleached flour will work. However, rye or whole wheat flour can often help "jumpstart" the process because these flours contain more natural nutrients and enzymes than white all-purpose flour.

Quick Troubleshooting Tips

• Keep it clean: Always use a clean 16 oz jar with a ring lid to prevent unwanted mold.

• Don't suffocate it: While rehydrating, keep the lid loose so gases can escape.

• Smell is key: A healthy starter should smell sour, yeasty, or even like vinegar/alcohol. If it smells like "dirty socks" or rotting food, discard it and start fresh.​