Gluten Free Sourdough Starter Recipe for Beginners

What Is a Gluten-Free Starter and How Does It Work

A gluten-free sourdough starter is a simple flour-water mixture that ferments over time. It becomes a living sourdough starter culture made up of wild yeast and beneficial bacteria.

Before commercial yeast existed, this was how all bread rose. When flour and water are mixed together, naturally occurring yeast and bacteria wake up and begin to multiply. As the fermentation process continues:

• Wild yeast produce carbon dioxide, which helps dough rise.
• Beneficial bacteria produce acids such as acetic acid, which create flavor and help preserve bread.

This living starter is then mixed into dough to make gluten-free bread and other sourdough bread recipes. Many people, especially those managing celiac disease, appreciate the health benefits of fermentation and find sourdough easier to digest.

How Gluten-Free Sourdough Is Different From a Wheat Based Starter

Gluten-free sourdough does not behave the same way as wheat-based starters, and understanding this prevents frustration.

With a gf sourdough starter, you may notice:

• Less dramatic rise
• Smaller bubbles instead of large air pockets
• A thicker starter with a texture closer to batter
• Slower strength development over a long time

This is normal. Gluten-free flours do not contain gluten proteins, so they cannot trap gas the same way wheat flour does. Instead of focusing on height, the best results come from watching bubbles, smell, and overall activity.

Think of your starter as a living thing or even a new pet that needs consistent care rather than perfection.

How to Make a Gluten Free Sourdough Starter (Step-by-Step Video)

If you’re new to gluten free sourdough, this video will walk you through exactly how to make a starter from scratch, what to feed it, what to expect each day, and how to know when it’s ready to bake with.

You’ll see the real texture, consistency, and bubbling activity so you can confidently follow along and avoid the common mistakes that cause most starters to fail.

Flour feeds the wild yeast and beneficial bacteria that create a healthy sourdough starter culture. I use organic brown rice flour as my baseline because it ferments reliably and is easy to find. If you cannot use brown rice flour, sorghum flour, millet flour, or buckwheat flour can also work. For best results, choose one flour and stick with it rather than switching back and forth.

Avoid starch-heavy flours or blends with xanthan gum, as they do not support fermentation well on their own.

Filtered Water

Water activates the fermentation process. Filtered or bottled purified water works best, as chlorine in tap water can slow yeast activity. Use water at room temperature for consistent results.

Clean Glass Jar

A clean glass jar, such as a wide-mouth mason jar, provides a safe, non-reactive environment for fermentation. Keeping the sides of the jar clean is especially important early on to help prevent mold.

Pro Tip: Have 2 or 3 of the exact same jars on hand for ease.

Kitchen Scale

A kitchen scale allows you to measure ingredients by weight instead of volume, which is important for gluten-free flours. Measuring in grams helps maintain the right consistency and hydration. All directions in this recipe are given in grams for this reason.

Loose Cover and Rubber Band

A loose cover allows gases to escape while protecting the starter. A rubber band placed at the level of the starter after feeding makes it easy to track rise and activity over time.

I use a folded paper towel and rubber band over the top of my jar, other people prefer a new, clean coffee filter. Whatever you use to cover your jar of gluten free sourdough starter, it should be clean and not previously used for food.

Sorghum Flour

A reliable alternative. Sorghum flour absorbs slightly less liquid, so you may need a little more water to reach the consistency of pancake batter. 

It may also cause the starter to take on a light pink or peach tone during fermentation, which is normal when the color is evenly distributed.

Millet Flour
Mild and beginner friendly. It may look quieter in the jar but performs well in baking.

Buckwheat Flour
Very active and fast fermenting. Buckwheat flour starters often smell stronger early on, which is normal.

Sweet Rice Flour
Can work in a combination of flours, though it tends to create a denser starter when used alone.

Flours Not Recommended

• Nut flours like almond flour or coconut flour.
• Starch-heavy flours like tapioca starch, potato starch or cornstarch.

How a Gluten Free Sourdough Starter Develops Over Time

When flour and water are first mixed, you are not creating yeast. You are feeding what already exists.

Yeast and bacteria live in flour, air, and your kitchen environment. Adding filtered water or bottled water activates them. Using tap water with chlorine can inhibit fermentation, so filtered is best.

As you add fresh flour at each next feeding, yeast consume carbohydrates and release gas. Over time, the good bacteria crowd out harmful microbes.

Development speed depends on:

• Ambient temperature
• Flour choice
• Water quality
• Time of year

Quiet days are normal. Strong smells early on are normal. This is part of building a healthy active sourdough starter.

Why a Clean Jar Matters Especially Early On

This is one of the most important steps and one many people skip.

During the first week, your starter does not yet have enough good bacteria to protect itself. Dried starter on the sides of the jar can easily grow mold.

To reduce risk:

• Transfer the starter to a clean jar at every feeding
• Use a glass jar such as a wide-mouth mason jar. (Do not use plastic)
• Keep the jar sides clean and dry

This prevents mold and protects your starter while it is still weak.

Day One: Creating the Starter

Day one is about starting fermentation and building good habits right away.

Day 2: First Feeding

Place your jar of gluten free sourdough starter on the kitchen scale and tare it to zero. Add 50 grams brown rice flour and 50 grams of room-temperature purified water to the jar.

Stir directly in the jar until smooth. The texture should be thick but pourable; it should fall slowly off the spoon, not sit in dry lumps. If needed, add a small splash of water to smooth it out.

Transfer the freshly fed starter to a clean jar, wiping the sides so no starter dries along the sides. Level the surface so it sits evenly at the bottom.

Cover loosely with a paper towel secured by a rubber band (do not seal with a lid) and let it rest in a warm spot for 12 hours.

If your kitchen is cooler, activity may take longer. Temperature makes a big difference.

After 12 Hours: Still Day 2, Your First Discard

Place the jar with your starter back on the scale. Remove all but 50 grams of starter and discard the rest into the trash.

Feed again with:

• 50 grams brown rice flour
• 50 grams room-temperature purified water

Stir until smooth and thick but pourable.

Transfer to a clean jar again, cover loosely, and let sit another 12 hours in a warm spot.

Day 3: Final 12-Hour Feeding

Discard all but 50 grams of starter, then feed it again with:

• 50 grams brown rice flour
• 50 grams purified room-temperature water

Stir until smooth, transfer to a clean jar, and cover loosely.

After this feeding, let it sit for 24 hours instead of 12. You’re now finished with twice-a-day feedings.

It may look like things are slowing down over the next few days, that’s completely normal. Gluten-free starters often go through a quiet phase around Days 3–7 while the good bacteria establish balance. Stay consistent; your starter is still building strength behind the scenes.

Days 4–7: Keep Going

From here, continue discarding down to 50 grams of starter every 24 hours and feeding it in the same 1:1:1 ratio (50g starter, 50g brown rice flour, 50g water).

Always transfer your starter to a clean jar after feeding — this helps prevent mold and keeps the sides from building up dried starter.

You can track the rise by placing a rubber band around the jar at the level of the freshly mixed starter. This makes it easy to see how much it rises and falls between feedings.

Cover loosely (not airtight) and let it sit in a warm, draft-free spot.

Days 8–14: Start Saving the Discard

Continue the same daily routine of discarding and feeding every 24 hours.

The difference now? You can begin saving your discard for recipes. Instead of throwing it away, place it in a separate jar in the refrigerator until you have enough to use.

By this stage, your starter should be developing more strength, and you’ll likely have used most (or all) of the flour and water originally called for in this recipe.

Day 15: Is Your Gluten Free Sourdough Starter Ready?

Your gluten-free sourdough starter is ready to bake with once it consistently rises within 3–6 hours after feeding for three days in a row.

At this point, you’ve officially moved into maintenance mode.

You can continue feeding at a 1:1:1 ratio, or increase your feedings (like 1:3:3) if you want to build a larger amount for baking.

For best results, keep your starter at room temperature and feed it daily while it continues to mature. Consistent feedings help strengthen the fermentation cycle and improve performance over time.

A truly mature gluten-free starter is usually around 3 months old with steady care. As it matures, you’ll notice a stronger rise, better crumb structure, and improved flavor in your breads.

If you need to reduce daily feedings, be sure to read the section below about refrigerating your starter properly.