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.
