• Free US shipping

    On every order, with tracking.

  • Ships same day

    Out on the next USPS pickup.

  • Beginner-friendly

    Clear printed and digital guides.

  • Lasts a lifetime

    One packet, endless loaves.
  • Hunsucker's San Francisco sourdough starter culture packet with label
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Our heirloom starter

San Francisco Sourdough Starter Culture – Heirloom Starter with Easy Activation Guide

$23.95
$23.95
Sale Sold out
Shipping calculated at checkout.

Authentic San Francisco culture with step-by-step activation instructions. Free shipping, and it ships today.

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How it works

Read the FAQ
  • Slices of homemade bread on a table

    1. Wake it up

    Follow the 5-day activation guide. A little flour, a little water, and your starter comes to life.

  • Sourdough loaf on a dark surface

    2. Keep it fed

    Feed it regularly and it stays healthy for years, ready whenever you want to bake.

  • Rustic sourdough boule on a white table

    3. Bake

    Crusty boules, baguettes, pizza, pancakes and pretzels, all with that classic San Francisco tang.

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Read the FAQ
Hands shaping sourdough bread dough

Never baked sourdough?

Your first loaf, made easy

No experience needed. Our printed instructions and digital guide walk you through every step, and if you get stuck, you can email a real baker who'll help you troubleshoot until your starter is bubbling.

Get started
Rustic sourdough boule on a white table

The perfect gift

One to keep, one to give

Our Gift 2-Pack comes with two packets of heirloom starter, so you and someone you love can start baking together. It ships free and arrives in one package.

Shop the Gift 2-Pack

A culture with history

San Francisco sourdough gets its famous tang from a unique pairing of wild yeast and bacteria. Our heirloom culture carries that lineage, with roots going back more than 175 years. It's mature, resilient, and full of the flavor only age can bring.

Shop the starter

Questions? We've got answers

How long before I can bake?

The activation process takes about 5 days. Once your starter is bubbly and active, you're ready to bake.

Do I ever need to buy another packet?

No. Once activated, your starter can be fed and kept going indefinitely.

How fast does it ship?

Orders are processed the same day and ship via USPS Ground Advantage with tracking. Shipping is free on all US orders.

What if something goes wrong?

Email us at landcrush@gmail.com. We'll help you troubleshoot, and if your order arrives damaged or your starter won't activate, we'll make it right.

Do you offer bulk or wholesale orders?

Yes. Schools, cooking classes, retailers and event organizers can order in bulk. Email us with the quantity you need and we'll send a quote.