Easy Sourdough Starter Recipe

Learn how to make a simple sourdough starter from scratch using just whole wheat flour, all-purpose flour, and water—no commercial yeast needed! This easy method is perfect for beginners and helps you create a strong, active starter in just 5 days. Whether you’re brand new to sourdough or want a reliable recipe with basic ingredients and no fancy equipment, this is the foolproof sourdough starter recipe you’ve been looking for.

Ingredients:

• ½ cup whole wheat flour
• ½ cup all-purpose flour
• 1 cup filtered water (room temp)

Equipment:

• 1 large glass jar or container (at least 1-quart size)
• Spoon or spatula (non-metal preferred)
• Loose-fitting lid, plastic wrap, or a clean kitchen towel
• Measuring cups or a kitchen scale (optional, but helpful)

Day-by-Day Instructions:

Day 1: Mix

• In your jar, mix ½ cup whole wheat flour, ½ cup all-purpose flour, and 1 cup water.
• Stir until smooth. Scrape down the sides.
• Cover loosely and let it sit at room temperature for 24 hours.

Day 2: Check & Feed

• You might see a few bubbles—great!
• Discard about half the mixture (just eyeball it).
• Add: ¼ cup whole wheat flour, ¼ cup all-purpose flour, and ½ cup water. Mix well.

Day 3–5: Feed Daily

• Repeat the same feeding: discard half, then feed with the flour mix and water.
• By Day 4 or 5, it should be doubling in size within 4–8 hours and smell slightly tangy, yeasty, and pleasant.

Day 6+: Ready to Use

• Once your starter is consistently rising and falling with bubbles and a sweet-sour smell, it's ready to bake!
• You can now store it in the fridge and feed it 1–2 times per week.

Tips:

• If your home is chilly, place the jar in the oven with the light on or near a warm appliance.
• Use filtered or dechlorinated water—chlorine can prevent fermentation.
• Want to switch to all-purpose only later? That’s fine once your starter is strong.

How to Know Your Starter Is Ready

Try the Float Test:
Drop a small spoonful of your starter into a glass of water. If it floats, it means it's airy and full of bubbles—ready to bake! If it sinks, it's not quite active yet or you’ve waited too long after feeding.

Look for These Signs:

• Doubles in size within 4–8 hours of feeding
• Bubbly and airy texture
• Has a pleasant tangy or yeasty smell

When to Feed Before Baking:
If your starter is stored in the fridge, take it out and feed it the night before you bake. Wait until it doubles and passes the float test before using it in your sourdough recipe.

Frequently Asked Questions