Welcome to Bubbling Starter! If you’re new to sourdough (or troubleshooting a loaf that didn’t quite behave), you’re in the right place. Here are answers to the most common questions readers ask.

Getting Started

What is sourdough?

Sourdough is bread made using a natural starter instead of commercial yeast. The starter contains wild yeast and bacteria that ferment the dough, giving sourdough its flavor, texture, and rise.

What is a sourdough starter?

A starter is a mixture of flour and water that captures wild yeast from the environment. Once active, it can be used to make bread. A sourdough starter is kept alive by regular feeding with flour and water.

How long does it take to make a starter?

Most starters become active in 5–10 days, but strength and consistency improve over several weeks. There are starters out there however, that have origins going back over a hundred years.

Do I need special equipment?

Nope! You can begin with a jar, a spoon, flour, water, and a scale (recommended for accuracy but not required).

Feeding & Maintaining a Starter

Feeding & Maintaining a Starter

• Daily if kept at room temperature

• Once a week if stored in the fridge

Note: If it goes longer, don’t worry. I’ve regularly revived an existing starter that sat in the fridge for several months without feeding. With 3–4 feeds spaced 18–24 hours apart, a previously stable starter can usually come back to life without any problems.

What flour should I use?

Unbleached all-purpose flour works well. Whole wheat or rye can help boost activity, especially in a new starter.

How do I know my starter is ready to bake with?

It should:

• Double in size after feeding

• Smell pleasantly tangy

• Pass the float test (a small piece floats in water)

What if I forget to feed it?

It’s usually recoverable. Feed it regularly for a few days and watch for signs of activity.

Baking Questions

Why didn’t my bread rise?

Common reasons include:

• Weak starter

• Under-fermented dough

• Cold kitchen temperature

• Too much flour added during shaping

Why is my bread dense?

This can happen if:

• The dough wasn’t proofed long enough

• The starter wasn’t strong

• The dough was handled too roughly

Why is my bread so sour and hallow?

Watch for over-proofing:

• A starter (or dough) can peak and collapse if left too long between feeds

• Signs include a strong sour/alcohol smell, runny texture, and little rise after feeding

• This doesn’t mean it’s ruined — it just needs regular feedings to rebuild strength

• Over-proofing is common and rarely mentioned, but it’s one of the biggest reasons sourdough seems “weak” or slow to rise

Why is my crust too hard?

Try:

• Lowering bake time slightly

• Covering bread during part of the bake

• Letting it cool fully before slicing

Why is sourdough… sour?

Longer fermentation times create more tangy flavors. Shorter fermentation produces a milder taste.

Troubleshooting

My starter smells weird — is it bad?

A tangy, yogurt-like smell is normal. Strong rotten or moldy smells mean it should be discarded.

There’s liquid on top of my starter. What is it?

That’s called “hooch.” It’s a sign your starter is hungry. Stir it in or pour it off, then feed the starter.

My starter isn’t bubbling. What should I do?

• Feed consistently

• Keep it warm

• Try a mix of whole grain and white flour

Does water type affect a sourdough starter?

Yes. Hard water can support fermentation because it contains minerals, while very soft or heavily chlorinated water can slow starter activity. If your starter rises well and smells balanced, your water is fine. If it seems sluggish, try filtered or spring water.

Can I start over if something goes wrong?

Absolutely. Every baker restarts at some point — it’s part of learning sourdough.

Storage & Planning

Can I keep my starter in the fridge?

Yes. Feed it, let it start bubbling, then refrigerate. Feed weekly to keep it healthy.

How far ahead should I plan a bake?

Most sourdough loaves take 12–24 hours from feeding your starter to pulling bread out of the oven.

Can I freeze sourdough starter?

Yes, though drying or refrigerating is usually easier and more reliable for long-term storage.

About Bubbling Starter

Who is this blog for?

Anyone curious about sourdough — from total beginners to experienced home bakers.

What makes Bubbling Starter different?

We focus on:

• Simple explanations

• Beginner-friendly recipes

• Honest troubleshooting

• Learning through trial and error

How can I improve my sourdough skills?

Practice, patience, and paying attention to your dough. Every kitchen and environment is different — that’s part of the fun.

Still Have Questions?

f you didn’t find your answer here, explore the blog posts or reach out through the contact page. Sourdough is a journey, and every loaf teaches you something new.

Happy baking,

Bubbling Starter