Superstarter Dried Sourdough Starter Kit

Activating your new sourdough starter is simple. Just follow the included instruction card, or visit our rehydrating page for more detail.

Just mix your packet of Superstarter powder with flour and water daily, and in 3-4 days you will be ready to bake!

Each small batch of Superstarter begins with our master culture, which traces its heritage back over 175 years. A small portion is strengthened over our proprietary five-day protocol, then gently dehydrated at low temperatures to preserve peak microbial strength. Combined with our detailed, beginner-friendly instructions, this means your sourdough starter will wake up faster, stronger, and you'll be baking fresh bread in as little as three days.

A sourdough starter is a living microbial community, primarily populated by wild yeasts and lactic acid bacteria. Through the process of fermentation, this culture breaks down flour's sugars, creating a leavening effect for your bread without the need for commercial yeast. By carefully dehydrating this culture, we preserve these microorganisms in a dormant state. This dehydrated sourdough starter powder is shelf stable until you are ready to activate your starter. 

Our mother culture is carefully maintained using optimal feeding ratios, a proprietary blend of flours, and temperature controlled. When each small batch of Superstarter is ready to harvest, we gently dehydrate it using food-grade equipment, carefully monitoring both temperature and humidity. This scientific approach ensures maximum viability and faster growth.Through controlled testing and analysis, we have selected for fast-growing yeast cultures, maximized microbe and LAB density, while reducing acidity. This results in a sourdough starter that rehydrates quickly at full strength. It’s not just dry discard: it’s alive and optimized to bake, so you can go from powder to bread in as little as three days.

How much is shipping? Shipping is a flat rate of $3.95 within the continental United States. Two or more Superstarter kits ship free!

What tools do I need to start? You will need a glass jar, a food scale, and something to stir with. That's it!

Will it be safe in the mail? Cold and freezing temperatures will not harm your starter, as it is already in a dormant state. The normal range of temperatures a package encounters during transit are safe for your starter. If you live in an area that faces extreme heat, you should remove your starter from your mailbox promptly, as prolonged temperatures over 120F may damage yeast cultures.

How long does activation take? As little as three days for full strength with our proven protocol. Note: starters stored in kitchens below 72F may rehydrate more slowly.

What's the shelf life? 2+ years when stored in a cool, dry place.

Can beginners succeed with this? Absolutely! Our instructions are designed to be clear for first-time sourdough bakers, and we are available to help if you have any questions. 

What makes this different from commercial yeast? Sourdough starter creates a signature fermented flavor profile and improved bread digestibility through traditional fermentation.

How much bread can I make with this kit? Once activated, your starter can make countless loaves for decades with proper maintenance.

We're bakers first.

Yeast Coast Sourdough was born from a desire to share our starter with those we love. Things grew from there, and we've found ourselves shipping our dehydrated sourdough starter kits nationwide.

Each and every kit is still handcrafted in small batches, by us, from our 175 year old heritage mother culture. Because we're bakers ourselves, we know exactly what to look for to ensure our kits are operating at their best.

If you have any questions at all, whether it's about the product, instructions, or just general baking, don't hesitate to reach out: hello@yeastcoastsourdough.com There's nothing we love more than chatting about bread.