How to Revive & Rehydrate Dried Sourdough Starter

Ideal Environment

  • Temperature: 75–78°F is ideal
  • Cover: Lid on loosely (starter needs airflow, not pressure)

Day 1

  1. Take 5g dried starter and place it in a clean jar.
  2. Add 30g water heated to Approx 100°F.
  3. Let the starter soak and fully dissolve for 1 hour.
  4. Add 25g flour and mix well until smooth.
  5. Cover loosely and leave at 70-75°F for 24 hours.

Day 2

  1. Take 10g starter and discard the rest.
  2. Add 60g room-temperature water (about 76°F).
  3. Add 60g flour.
  4. Mix well, cover loosely, and leave for 24 hours.

Day 3

Repeat Day 2 steps exactly.

Day 4

Repeat Day 2 steps exactly.

Day 5 (Strength Test Feed)

  1. Take 20g starter.
  2. Feed with:20g flour20g warm water
    (1:1:1 ratio)
  3. Keep at ~78°F and observe.

Your starter should:

  • Double in size
  • Peak within 4–4.5 hours

If it does, congratulations, you’re ready to bake!

Conclusion

Every kitchen is different. You may need to adjust:

  • Feeding ratios
  • Feeding quantities
  • Temperature
  • Feeding frequency

Pay attention to how your starter behaves rather than the clock alone. A healthy starter will smell pleasantly tangy, rise predictably, and respond well to regular feedings.