Sourdough Starter Recipe

Sourdough Starter: An Active Sourdough Starter is the heart of sourdough baking. It’s a living culture of wild yeast and beneficial bacteria that naturally leavens bread—no commercial yeast needed.

What “Active” Means

An active starter is:

• Bubbly and airy
• Doubles in size after feeding
• Has a pleasant tangy smell (not foul)
• Passes the “float test” (optional)

Ingredients

You only need:

• Flour (whole wheat or all-purpose)
• Water (filtered or non-chlorinated)

tep-by-Step Recipe (7-Day Method)

Day 1

• Mix:
  • ½ cup flour
  • ¼ cup water
• Stir well → thick paste
• Cover loosely and leave at room temp (24 hours)

Day 2

• You may see a few bubbles
• Add:
  • ½ cup flour
  • ¼ cup water
• Mix and cover again

Day 3

• Starter may smell slightly sour
• Discard half
• Feed:
  • ½ cup flour
  • ¼ cup water

Day 4–5

• More bubbles + slight rise
• Repeat:
  • Discard half
  • Feed same ratio daily

Day 6–7

• Starter should:
  • Double within 4–6 hours after feeding
  • Be bubbly and elastic

Now it’s active and ready to use!

Feeding Schedule (After It’s Active)

If baking daily:

• Feed every 24 hours at room temp

If baking occasionally:

• Store in fridge
• Feed once a week

Simple Feeding Ratio

Use a 1:1:1 ratio:

• 1 part starter
• 1 part flour
• 1 part water

Example:

• 50g starter + 50g flour + 50g water

Pro Tips

Temperature Matters

• Ideal: 22–27°C
• Cold slows growth, warmth speeds it up

Flour Choice

• Whole wheat or rye helps start faster
• Switch to all-purpose later if desired

Water Quality

• Avoid chlorinated water (can kill yeast)

FAQs

1. What if my starter smells bad?

• Slight sour = normal
• Rotten/putrid = discard and restart

2. What is the float test?

Drop a small amount in water:

• Floats → ready
• Sinks → needs more feeding

(Not always 100% reliable, but helpful)

Why discard starter?

• Prevents overgrowth
• Keeps balance of yeast & bacteria

Can I skip feeding?

Yes, but:

• Starter becomes weak
• Needs a few feedings to reactivate

Can I use it before Day 7?

Sometimes by Day 4–5, but best strength comes after a full week.

Nutrition (per tablespoon approx.)

• Calories: ~15–20 kcal
• Carbs: ~3g
• Protein: ~0.5g
• Fat: 0g

✔ Contains beneficial bacteria
✔ Helps improve digestion in baked goods

Final Thoughts

Making an active sourdough starter is simple but requires patience. Once established, it can last for years—even decades—if properly maintained.