what is sourdough starter
Baking Basics Recipes

What is sourdough starter?

Family Traditions

So how does one answer the question “What is sourdough starter”? Sourdough starter is so much more than the sum of its ingredients. Since sourdough starter is often passed down from generation to generation it often represents family traditions, relationships, and community ties. Each starter has its own personality and texture-based upon moisture levels and local microbial makeup.

what is sourdough starterExactly What is Sourdough Starter?

Sourdough starter is used to make sourdough bread. Dating back to ancient Egypt, sourdough bread is the oldest leavened bread in the world and is different from other breads since it uses starter instead of active dry yeast.

Basically, a sourdough starter is a fermented dough that uses a lactobacillus and yeast culture as a leavening agent. It is made up of flour, water, wild yeast, and bacteria. Wild yeast is what causes the bread to rise by producing carbon dioxide. The bacteria sour the dough and give the bread the sour flavor.

How does it work?

Combining these simple ingredients causes the wild yeast to break down the sugar in the flour which starts the leavening process. The sugars in the flour feed the wild yeasts and they begin to multiply. The multiplying yeast creates carbon dioxide which makes the bread rise

This is a quite simple explanation, but I believe it is enough to give you a general idea as the how sourdough starter is used to make bread.

What is the difference between sourdough starter and yeast? What is sourdough starter?

The biggest difference between bread made with sourdough starter and bread made with dry yeast is the source of the yeast. The yeast most often used today can be purchased in the store and has been preserved and dried to create a powder that becomes active when adding water. The yeast fungi which then feeds on the sugar and starch to make your bread rise. In contrast, sourdough starter keeps the yeast fungi alive and growing.

Dry yeast is faster than using a sourdough starter.

How do you make a sourdough starter from scratch?

Making a sourdough starter is not difficult since it contains 3 basic ingredients: flour, water, and salt (optional). There are many recipes online but here are some of our favorites:

King Arthur Flour

This is one of the best recipes online because it offers tips and techniques from several experienced bakers to help you avoid some of the pitfalls of making this recipe.

Feasting At Home

Sylvia has a great blog and takes the time to show you how to make a sourdough starter step-by-step. She includes a video to help you understand the process.

Holy Cow Vegan

If you have questions about sourdough you will probably find your answers at Holy Cow Vegan. Vaishalia has a robust Q&A section on her site where I’m sure you will find answers.

For a more in-depth look at sourdough baking you might want to check out King Arthur Baking’s Sourdough Baking – The Complete Guide.

Create your own tradition

Now we’ve answered the question “what is sourdough starter”, what are you waiting for? Now is the perfect time to start your own traditions using sourdough starter. Try out some of the recipes and when you find your favorite be sure to pass it forward to your family and friends.


I would love to hear about your experiences. Please drop me a line below.

More recipes here. 

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