Buy Sourdough Starter Online

Looking to buy sourdough starter online? Every starter from Great Grandma's Sourdough is organic and comes with a step-by-step activation guide, recipes, and personal support. Pick the format that fits the way you bake.

Dehydrated sourdough starters are gently dried, shelf-stable, and ship well anywhere, so you can activate yours whenever you're ready. Follow the included guide and most are bubbly and bake-ready in about 5 days. Choose from our San Francisco, Italian Monastery, Ancient Egyptian, Alaskan, gluten-free, Sue's Sour, Black Death and Eve starters.

Prefer to skip the rehydration? Our live liquid sourdough starter arrives already active in a glass jar and is usually ready to bake with in 1 to 2 days.

New to sourdough? Our San Francisco starter is a great place to begin. The rehydration instructions, our dehydrated vs. liquid guide and the FAQ walk you through every step. Every starter includes a free 1-year replacement warranty.

Sourdough starter FAQ

How long does a dehydrated sourdough starter take to activate?

Dehydrated starters typically become fully active within 3 to 5 days. Follow the step-by-step guide that comes with your order and expect a bubbly, bake-ready starter in about 5 days. Our live liquid starter usually recovers in 1 to 2 days. Temperature, flour type and water quality all affect timing.

How long does shipping take?

Orders are typically processed within 1 to 2 business days. Most U.S. orders arrive 3 to 7 business days after shipment, and international orders usually arrive in 10 to 20 days depending on the country. Standard U.S. shipping is free, and upgraded tracked shipping is available at checkout. Delivery times are estimates and cannot be guaranteed.

What does the 1-year replacement warranty cover?

Every starter comes with our free 1-year replacement warranty. If your starter doesn't thrive after you follow the activation guide, message us and we will replace it. Personal support comes with every order.

Which countries do you ship to?

We have sold to bakers in 70 countries and offer to sell to 200+ countries and territories. Dehydrated starters are lightweight and shelf-stable, which makes them the best choice for international orders.

Which sourdough starter should I choose?

If you are new to sourdough, our San Francisco starter is our best seller and a great all-around choice. For a unique backstory, try our Ancient Egyptian or Italian Monastery starters. For maximum sourness, try Sue's Sour or Black Death. Not sure? Message us and we will help you pick.