The fastest way to get starter in San Francisco
You can buy sourdough starter at farmers markets across San Francisco, at specialty bakeries, and from online retailers who ship to the Bay Area. The farmers market route is fastest: the Ferry Plaza Farmers Market (Saturday and Tuesday mornings) and the Heart of the City Farmers Market (Wednesday and Sunday) both have vendors selling starter in jars, usually for $8 to $15. You walk out with it the same day and can feed it that evening.
If you prefer to buy from a bakery, Tartine Bakery in the Mission District and Boulettes Larder at the Ferry Building both sell starter. Call ahead to confirm they have it in stock and what they charge. Some bakeries give starter away free or for a small donation if you ask; others treat it as a product line. Online options like Cultures for Health and King Arthur Baking Company ship to San Francisco and arrive in three to five business days, though you pay shipping on top of the starter cost.
Key Takeaways
- Ferry Plaza Farmers Market (Saturday and Tuesday) and Heart of the City Farmers Market (Wednesday and Sunday) sell starter in jars for $8 to $15, ready to take home the same day.
- Tartine Bakery and Boulettes Larder sell starter but require a phone call first to check availability and price.
- Online retailers like Cultures for Health and King Arthur Baking Company ship to San Francisco in three to five days but add shipping costs.
- Starter from a local source (farmers market or bakery) is already adapted to San Francisco's climate and humidity, which can speed up your first loaves.
Farmers markets with sourdough starter vendors
The Ferry Plaza Farmers Market runs Saturday mornings (8 a.m. to 2 p.m.) and Tuesday mornings (10 a.m. to 2 p.m.) at the Ferry Building at the Embarcadero. Multiple vendors sell starter here, and you can compare prices and ask questions about how they maintain their cultures. The Heart of the City Farmers Market runs Wednesday and Sunday mornings (7 a.m. to 5 p.m.) at United Nations Plaza near Civic Center. Both markets have vendors who specialize in fermented foods and baking supplies.
Farmers market starter is usually packaged in a small glass jar with a label showing the age of the culture and feeding instructions. Ask the vendor how old the starter is and whether it has been fed recently; a starter that was fed the day before is more active and will perform better in your first bake. Some vendors will also tell you the flour they use to maintain it, which matters if you have a preference for whole grain or all-purpose.
Bakeries and specialty shops in San Francisco
Tartine Bakery (600 Guerrero Street, Mission District) is known for its sourdough and sells starter to home bakers. Call them at (415) 487-2600 to ask about availability and price before you visit. Boulettes Larder (1 Ferry Building, Suite 42) also sells starter and is open daily. Both bakeries can tell you about the age and maintenance of their cultures.
Some smaller neighborhood bakeries, including Noe Valley Bakery and Mission Milling, occasionally sell starter or will give you a portion if you ask politely and buy a loaf. It is worth calling ahead. Specialty food shops like The Gardener (1836 Fourth Street, Berkeley, just across the bay) also stock starter, though you would need to travel outside San Francisco proper.
Online retailers that ship to the Bay Area
Cultures for Health sells sourdough starter online and ships to California. Their starter arrives in a dehydrated form that you rehydrate with water and flour before use. King Arthur Baking Company also ships starter to San Francisco; theirs arrives as an active culture in a jar. Both charge shipping, which typically runs $8 to $15 depending on the retailer and your zip code. Delivery takes three to five business days.
The advantage of online ordering is convenience and the ability to read reviews before you buy. The disadvantage is that you pay for shipping and cannot inspect the starter before it arrives. If you order dehydrated starter, you will need to spend a few days rehydrating and feeding it before it is ready to bake with, whereas a jar from a farmers market vendor is ready to use when ready.
What to look for when you buy starter
A good sourdough starter should smell pleasantly sour and yeasty, not like nail polish or acetone. It should have a layer of liquid (called hooch) on top or be thick and bubbly throughout, depending on how recently it was fed. Ask the vendor when it was last fed and whether it is currently active. A starter fed that morning will be more vigorous than one fed two days ago.
The age of the starter matters less than its current condition. A starter that is one week old but well-maintained will outperform a starter that is ten years old but neglected. If the vendor can tell you how often they feed it and what flour they use, that is a good sign they take care of it. Starter from a local source is already adapted to San Francisco's cool, humid climate, which can give you better results in your first few loaves than starter from elsewhere.
Cost and what to expect to pay
Farmers market starter typically costs $8 to $15 per jar. Bakery starter ranges from free (if you ask nicely) to $10 to $20, depending on the bakery and the size of the jar. Online starter costs $12 to $25 before shipping. Once you have starter, the only ongoing cost is flour and water to feed it, which is minimal.
Some vendors will include printed feeding instructions with your purchase. If they do not, ask for them or take a photo of the label. You can also find feeding schedules online, but instructions from the vendor who sold you the starter are most reliable because they know how that particular culture behaves.
Frequently Asked Questions
Can I get sourdough starter for free in San Francisco?
Some bakeries and home bakers give starter away or ask for a small donation. Call Tartine or ask at farmers markets whether any vendors have extra. You can also post on local San Francisco community groups asking for starter; many people who bake sourdough are happy to share a portion of their culture.
How long does it take to get starter ready to bake with?
Starter from a farmers market or bakery is ready to use when ready if it is active and bubbly. Dehydrated starter from an online retailer takes three to five days of feeding before it is strong enough to leaven bread. Once you have it, you feed it regularly (usually once or twice a day) to keep it alive.
Does it matter which starter I buy if I live in San Francisco?
Starter from a local source is already adapted to San Francisco's temperature and humidity, which can help it perform better in your kitchen. Starter from elsewhere will work fine once you acclimate it to your environment, but local starter may give you faster, more reliable results in your first few loaves.
What is the difference between starter sold at farmers markets and starter from bakeries?
Both are living cultures and work the same way. Farmers market starter is usually cheaper and you can compare multiple vendors. Bakery starter comes from a professional kitchen, so it may be more robust, but you have fewer options and less ability to ask questions before you buy.
Can I order starter online and pick it up in San Francisco instead of paying for shipping?
Some online retailers offer local pickup options, but most ship only. Check the retailer's website before you order. If shipping costs are high, buying from a farmers market or bakery in person is usually cheaper and faster.