Print

Ultimate Beginner’s Guide: How to Make and Maintain a Healthy Sourdough Starter From Scratch (7-Day Routine)

A split image showing an active, bubbly sourdough starter in a glass jar next to a close-up of its foamy texture.
Print Recipe
Save Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

Learn the simple, step-by-step process for creating your own active sourdough starter using only flour and water. This guide is perfect for beginners and covers daily feeding and maintenance for a reliable wild yeast culture.

Ingredients

Scale
  • 100g Whole Grain Flour (Rye or Whole Wheat recommended for Day 1)
  • 100g Unbleached All-Purpose Flour (for subsequent feedings)
  • 100g Unchlorinated Water (room temperature)

Instructions

  1. Day 1: Initial Mix. In a clean glass jar, combine 50g of whole grain flour and 50g of room temperature water. Mix thoroughly until no dry flour remains. Cover loosely (use a lid resting on top or cheesecloth secured with a band) and leave it at room temperature (ideally 70-75°F or 21-24°C) for 24 hours.
  2. Day 2: Rest. Do not feed the starter today. Simply observe it. You might see a few small bubbles, or nothing at all. Leave it covered loosely at room temperature for another 24 hours.
  3. Day 3: First Feeding. You should see some activity. Discard all but 100g of the starter mixture. To the remaining 100g, add 50g of unbleached all-purpose flour and 50g of water. Mix well, cover loosely, and let sit for 24 hours.
  4. Day 4: Consistent Feeding. Discard all but 100g of the starter. Feed it with 50g of unbleached all-purpose flour and 50g of water. Mix well. You should see more consistent bubbling now.
  5. Day 5: Twice Daily Feeding Begins. If your starter is doubling in size between feedings, switch to feeding every 12 hours. Discard all but 100g of starter. Feed with 50g flour and 50g water. Repeat this feeding in 12 hours.
  6. Day 6: Building Strength. Continue the 12-hour feeding schedule. Your starter should be very active, showing large bubbles, and reliably doubling in volume within 4-8 hours after feeding. This is when you are building a strong, active sourdough starter.
  7. Day 7: Ready to Use. Your homemade sourdough starter is ready when it consistently doubles in size within 4-6 hours after feeding and smells pleasantly sour, not foul. You can now use it for baking or transition to a maintenance schedule.

Notes

  • Use filtered or bottled water if your tap water is heavily chlorinated, as chlorine can inhibit wild yeast growth.
  • A consistent room temperature is key; cooler temperatures slow fermentation, warmer temperatures speed it up.
  • If you see mold or pink/orange streaks, discard the entire batch and start over. Healthy starters only show white or clear liquid (hooch) on top.
  • To keep your starter active long-term, feed it daily if kept on the counter, or once a week if stored in the refrigerator.

Nutrition

Find it online: https://cookingbycarla.com/sourdough-starter-guide-beginners/