Sourdough Startr

Find the cleanest sourdough bread near you.

Our ancestors didn't eat enriched flour. Neither should you.

The Problem

Finding clean sourdough in America is harder than it should be. Most bread sold as "sourdough" contains enriched flour, dough conditioners, and additives that were not in bread 50 years ago. There is no easy way to tell from a bakery's name or storefront whether what they're selling is the real thing.


Why Sourdough?

Most bread spikes your blood sugar, sits heavy, and leaves you sluggish. Sourdough does not — at least not real sourdough. The long fermentation process breaks down gluten and phytic acid in ways that commercial yeast bread never achieves, making it significantly easier to digest and gentler on your gut. The glycemic response is lower. The nutrients are more bioavailable. Your body actually knows what to do with it.

For runners and anyone who trains seriously, this matters. What you eat before and after a hard effort is not just fuel, it's recovery. Clean sourdough made from flour, water, salt, and a live culture is one of the oldest foods on earth. It sustained people through centuries of physical labor long before enriched flour, dough conditioners, and ascorbic acid existed.

The problem is that most bread sold as sourdough today is not. It is conventional bread with a sourdough flavor added. Sourdough Startr exists because finding the real thing should not require reading ingredient labels at every bakery you walk into.


The Standard

What We Look For

What We Reject


How We Verify

Every listing is confirmed through at least one of the following:

Nothing gets listed based on assumption or marketing language. If we can't confirm ingredients, the bakery doesn't make the list.

Built in NYC by a runner and UC Berkeley student who got tired of reading ingredient labels.