kensington sourdough 150 year old san Francisco sourdough starter

San Francisco 150 Year Old Sourdough Starter Review

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Martin (Dad What Cooks)
By Martin (Dad What Cooks) Created February 26, 2022 Updated October 5, 2026

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This San Francisco starter is available in a dried form from Kensington Sourdough based in Canada. This is some information about the starter and my experiences with it. I'm happy to say that if you buy via the links on this page and use code WHATCOOKS15 you will get a 15% discount.

Contents

What Makes the San Francisco Sourdough Starter Unique?

A brief history of the 150 year old starter

The story so far with this particular starter is that it traces its roots back to the San Francisco gold rush. Since then it has been living and mingling with Kensington Markets for the past several years and has now become an enigma of its own! The starter has been in continuous use since 1850 providing people with great tasting bread for all these years.

The starter is over 150 years old and it actually comes from legendary bakery 'Parisian' in San Francisco (whose claim to fame was originating San Francisco sourdough) and survived the huge 1906 California earthquake. California sourdough has an excellent reputation and a history that dates back to gold miners in the California hills carrying the containers of starter from place to place as they mined during the rush.

From then to now

I've been using the Kensington Sourdough 150 Year Old San Francisco Sourdough Starter for over four years and this is my experience with it.

The Miniscule Magic Behind the Flavour

The active part of this starter is a yeast called candida milleri and a local bacteria called lactobacillus. Sounds strange to think it's alive but all bread and yeast is. These cultures are all natural, great for the gut and more importantly help it taste delicious.

sourdough starter in jar

The sourdough starter is available from the Kensington Sourdough website, and they will ship it to you anywhere in the world. Use the link below to get yours.

What does the Kensington sourdough starter cost, and how does it reach the UK?

The starter ships from Canada as a small packet of dried culture, sent by standard letter mail. At the time of writing it costs around £11.99 before any discount and with code WHATCOOKS15 you take a further 15% off.

Delivery to the UK usually takes 1 to 2 weeks in the post. It is dried and shelf stable, so nothing spoils on the way and there is no need to be in for delivery.

Will I be charged customs or import VAT?

For a low value item like this it is simpler than people expect. There is no customs duty, because duty does not apply to goods under £135, and this is comfortably under that. Any UK VAT is either built into the price you see at the checkout or, occasionally, requested by the courier when the packet arrives. In practice a dried starter sent by letter mail almost always turns up with nothing extra to pay. Check the total at the checkout so you know exactly what you are paying before you order.

My experience with the Kensington Sourdough Starter

Having used this starter for over 4 years I have had great success in baking bread time and time again. The key to success is feeding the starter. What amazes me is how robust the culture is. I can feed daily if left out on the counter but more often than not I feed weekly, keeping the starter in the fridge until needed. I have a full guide around managing and caring for a starter so be sure to check this post out.

Unboxing and Activation Process

The starter arrives in a small freeze dried packet in an envelope along with details of the history of the sourdough starter. Bundled in the envelope there are a list of instructions on how to re-hydrate the starter and (more importantly) how to care for the starter. The care is key because this is a living thing and so regular feeding is a must. Make sure to feed your starter according to the instructions and it will last you for a long time.

I find it helps to give your starter a name (mine is called Prue). Make it a member of the family and you will find it gets more care and attention without being forgotten about!

My baking results over the past 4 years

Following the starter being used, take a look below at some of the breads which I have made over the past 4 years. All of them tasted great and look fantastic too. Depending on how you score your bread will determine the way the crust splits and opens up on the top.

Caring for your Kensington San Francisco Sourdough Starter

Feeding Schedule and Storage Tips

Once you are up and running as per the instructions (which takes around a week in total) then you need to keep good care of the starter. Remember, a 150 Year Old San Francisco Sourdough starter needs extra care and so feeding regularly is the important point. If like me you bake at weekends and every so often in the week, then keep the starter in the fridge. Take it out the night before and feed. You will work out a routine that works best for you eventually. For my, I work regularly and so baking is only a hobby. See my sourdough during the working day post for timings on what works best for a typical 9-5 job.

A feed once or twice a week will keep it happy. Try and keep a regular schedule though for best results. Mine gets fed on Wednesdays & Saturdays and is kept in the fridge the rest of the time. Consistency is key here and I wanted to make sure this worked before doing any Kensington sourdough reviews that I got consistent results.

Day Action Storage Location Notes
Monday Rest Fridge No feed – low activity needed
Tuesday Rest Fridge No feed – still dormant
Wednesday Feed (discard & refresh) Counter (then fridge) Prep for midweek baking
Thursday Rest Fridge Let it chill (literally)
Friday Rest Fridge Optional prep for weekend baking
Saturday Feed (discard & refresh) Counter (then fridge) Prime baking day – starter at peak
Sunday Rest or optional feed Fridge or counter Extra bake or prep for Monday

Troubleshooting common issues (and solutions)

While it is quite a robust starter, there are times when a balance in the environment ambient temperature fluctuates, or the flour composition changes and these little variations can cause issues with the way the starter behaves. Common symptoms include:

Issue Possible Cause Solution
No rise or bubbles Starter is too cold or underfed Move to a warmer spot and feed consistently
Grey liquid on top Hooch build-up from hunger Stir it back in or pour off and feed more often
Bad smell (like rotten eggs) Contamination or over-fermentation Discard most, keep a teaspoon, and refresh
Mould on the surface Poor hygiene or old food residues Discard completely and start fresh
Too sour or tangy Long ferments or over ripe starter Feed more frequently and use earlier
Too runny or too thick Incorrect flour-to-water ratio Adjust hydration using the bread hydration calculator

Sometimes you just need to keep your sourdough starter warm to keep it active.

As a final backup, keep some of the dried starter in the freezer and restore this if all goes wrong. If it really all fails, you can of course just buy another pack of starter.

Creative Uses for Sourdough Starter Discards

Sourdough Crackers

My sourdough starter cracker recipe uses some leftover discard to make some simple crackers. There are also variants of this recipe to give it a bit more flavour such as my lemon and herb discard crackers.

Pizza Dough with discard

The sourdough tang flavour can be added to a pizza dough and instead of a typical yeast based pizza dough, you can make a sourdough (long fermented) pizza dough. This sourdough discard pizza dough experiment I tried shows that it does work (but you need a bit of planning ahead as it takes a few days to make it).

Batter from sourdough discard

Sourdough discard can be used to make pancake batter with milk and eggs and flour. These can also be put into hot oil in a tray and used to make Yorkshire puddings with sourdough discard.

Storing discard leftovers

If you have some leftovers after each feed and you don't want to make any other recipes at the time, you can freeze the leftovers. So if you don't get enough for crackers in one discard then save it in a box in the freezer adding to it each time you throw away. When you finally have enough discard then you can defrost it all and use it for cooking. REMEMBER! For food safety reasons do not refreeze defrosted items again afterwards).

It's exciting to get experimental with the endless recipes that come from sourdough discard.

Sourdough Starter Frequently Asked Questions

What is the oldest sourdough starter?

Who knows? But what we do know is this one comes from the gold rush era (mid 1800's). We also know that there are some that date back to Egyptian times - some 4500 years old. I'm keen to know if anyone knows of anything older though.

How old is the San Francisco sourdough starter?

This starter is around 150 years old and still going strong. This will arrive to you in a freeze dried packet. All you need to do is follow the instructions contained and within a week you will have a feisty starter ready for action.

How old is a mature sourdough starter?

Starters that are mature are generally those which have been around for a few years. The more mature the more tang and "sour" in the bread. It's common place in some areas for starters to be handed down generation to generation. Some are reaching 50 years old or more without being freeze dried.

Did San Francisco invent sourdough?

While not invented as such, it is synonymous with producing a starter which began during the gold rush times. The star of this starter is a yeast called candida milleri and a local bacteria called lactobacillus. It's all natural, great for the gut and more importantly, tastes delicious!

Is it suitable for complete beginners?

Yes. It comes with instructions for rehydrating and feeding, and activation takes about a week. After that, a feed once or twice a week keeps it going. You can also use my bread hydration calculator to help.

Where to buy sourdough bread starter?

This is a freeze dried sourdough starter which you can buy from here and have it shipped anywhere in the world. From then you can start your own starter culture and make some sourdough bread.

How does a 150 Year Old San Francisco Sourdough Starter get to me?

It arrives as a small freeze dried packet in an envelope, along with the starter's history and step by step instructions for bringing it to life and caring for it.

What happens if I forget to feed it?

It is hard to kill. If it is neglected, discard all but a teaspoon and refresh with flour and water. Keeping some of the original dried starter in the freezer gives you a full backup if it ever fails.

Where to buy Kensington San Francisco Sourdough Starter with a discount

San Francisco Sourdough Starter In Action

Take a look for yourself at the Kensington Sourdough Starter in action. This time lapse footage of my gold rush Kensington Sourdough San Francisco Sourdough Starter is filmed over the space of 5 hours start to finish. It more than doubled in size in that time and was like this after a feed in the morning.

Starter Culture Recipes for the San Francisco Sourdough Bread

For a San Francisco sourdough starter recipe you can check out the breads section of my site and be able to fit making a sourdough in and around your day.

Get your Kensington Sourdough San Francisco 150 year old sourdough.

Use code WHATCOOKS15 to get 15% off your order

Get Your Own Starter

Should you buy this starter or make your own from scratch?

Fair question, and the honest answer is that you can make a sourdough starter at home with nothing but flour and water. I have a guide for that here so why pay for one?

Two reasons, from four years of using this one.

First, time and reliability. A from scratch starter takes a week to two weeks to get going, and plenty of first attempts stall, go mouldy or never build enough strength to raise a loaf. This arrives as an established culture. You rehydrate it over a few days and it is ready, with none of the guesswork.

Second, the culture itself. A starter you build at home is colonised by whatever wild yeast and bacteria live in your kitchen, which is fine but unpredictable. This is a known San Francisco culture that has been kept in continuous use since the 1850s. The flavour is consistent and properly sour, and once you settle into a feeding routine it behaves the same way every time.

If you enjoy the process and do not mind a few failed attempts, make your own and save the money. If you want a dependable starter that works from the first proper feed, and a bit of history in your bread, this is worth the small outlay.

I have had some great success with this 150 Year Old San Francisco Sourdough Starter. It makes writing Kensington Sourdough reviews so fulfilling because the proof is in the (bread?) pudding. My results are consistently good and providing Prue is cared for and treated as one of the family (almost), she will keep on providing good results.

History makes it

There is something about the story which I love and having a bit of history in the bread made gives it something extra. It is really obvious just how active the starter is once it gets going. Get yourself over to the Kensington Sourdough site and order a pack.

Feeding my sourdough starter in my pyjamas.

Use WHATCOOKS15 for a 15% discount

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2 responses to “San Francisco 150 Year Old Sourdough Starter Review”

  1. Kristie Graham avatar
    Kristie Graham

    Cheers Dad who bakes, at 1st I was a little skeptical since I'm assuming that your in the UK. Not necessarily about your baking chops but how you have a connection with the San Francisco sour dough and to be able to sell it 🤔
    I'm originally from California and have spent many years in and out of "the city" that's what we locals have called it forever. Anyways I've been baking since about 10 yrs old. And now I'm 65. Wow that's 55yrs for me; never really did the math before thanks Dad! Ok so I've had starters on and off for about 42 yrs omg! And it's just tonight that I decided to start a new one. My silly ex's Sister's chucked my old one out! And thats really fine since it's just been recently that I've gotten back into my baking; big time. And to the place where I'm considering starting up my pastry business again after 30yrs. Since I moved to NYC in 1995 I kept it going for sometime when I was living in Brooklyn NY.But as you probably know Brooklyn has some of the oldest and best bakeries in the world 🌎 . As far as I'm concerned San Francisco and New York would probably tie 👔 if we had a contest. And quite frankly it's always been about the water. That's kinda why I wanted to talk to you about the whole water issue pertaining to maintaining the best starters in the world 🌎. I use to be a world traveler and one of my best friends was from England 🇬🇧 I knew that the rumor was that you eat breakfast 3x's aday when on holiday there. Well that's not true at all for more than 1 reasons first of all after a certain time there breakfast is completely shut off 🙄 I don't know if that's changed with the times but if your in the know which it turns out we were mostly because our friend Geoffrey Lowe was a true English man who knew his way around the best pubs and small shops for everything that is great about classic British fare. Everyday we go out to shop for that same day. It use to be very much like that in Brooklyn as well. I say use to because most of the old timers that owned those amazing bakeries, fresh fruits, butcher and fresh seafood shops have either passed away or just can't afford the sky high rents. You'd have to sell a lot of loaves and never come close to stay in business in those neighborhoods same in SF. The prices are even higher in London I'm sure. I know I got off track a little so getting back to the point of your sour dough how are you able to sell it and how do we know that it's really SF's sour dough because trust me I'm dying to try some! But in the end it's always about the water and folks in the know are very well aware of this nuance. People actually have Brooklyn water flown into HI. after they open a pizza 🍕 shop there. I don't know if it will ever be the same probably not but they like to think so.
    I'm actually going to start a starter when I stop writing to you. I just got a fresh 3lb. bag of King Arthur's organic rye. If you know about King Arthur's flours then you will appreciate it even more. They swear by starting the best starters with rye flour which I haven't before. I always started with unbleached white so I'm excited to see how it does with rye. Sorry Dad but that's my que to get it going with my new starter. Please send me some more info about your lovely starter and I'll continue to research it on my end because I think it makes more sense to have it come out of SF. I had no idea that it could be an option. But if I did decide to order it from you wouldn't the shipping be quiet dear? And how's about customs and duty tax. Has that made it harder for you and your US customers to be able to enjoy this amazing ingredient. Thank you very much for listening. I look forward to your response. Best regards from Miss Kristie Graham NYC. Cheers 🍻 and have a good night

    1. thisisdad avatar
      thisisdad

      Hi Kristie,

      Thank you so much for your comment and story. It's great to hear how bread brings people together, no matter where they are in the world!

      So just to be clear, I'm an affiliate of Kensington Sourdough - they are based in Canada and I bought my freeze dried starter from them a couple of years ago. It's because of the amazing results I had as to why I had to promo it on my site. I've added some more clarity to my pages to highlight this also, so thank you for pointing it out.
      To answer your shipping and handling questions - Kensington sort all that from within their site so no impact to me based in here in the UK. They give me a small commission for anyone I send their way. It helps me to keep my site running covering hosting costs etc.

      As for your comment about the water - now that is interesting. I'd be so keen to know what a difference it makes! I reckon it's huge depending on where you are in the country. I know here in the UK the water in the north is so different to that in the south (much softer here up north).

      I hope your bake went well - I'm looking to get back into doing a few loaves this weekend after a busy week at work.
      Best wishes, Martin (aka Dad What Cooks).

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