A bubbly starter isn't a bulletproof starter. Watch me prove it, live.
And by the end of the week, you'll know exactly how to take yours from bubbly to bulletproof
Bulletproof is the difference between praying for oven spring and getting it. Between a crumb that's heavy and sticky, and one that's creamy, open and airy. Between a crust that's washed out and chewy, and one that's dark and crackly.
Most bakers think a bubbly starter and a strong one are the same thing. They're not, and that gap is why loaves keep falling flat, no matter what else gets fixed.
I'm rehabbing mine live, inside Sourdough Unchained, from waking it up through to bulletproofing it, so you can watch exactly how it's done and do the same with yours.
📆 Live Starter Rehab Cohort: July 20–27.Â
I don't know if I'll ever run this as a live cohort again, so I'm dropping the annual membership price by $20 for life, $147 to $127, until July 19. Miss this, and you'll miss both: the cohort and the price.
I'm in, show me what I get"I never measured the rise, and almost certainly started many bakes with unready starters."
— Phil Thomas, Sourdough Unchained baker
Fix it, once and for all
You know that flat loaf you saw at the start of the video above? I'm rehabbing the exact starter that produced it, from scratch, live, inside Sourdough Unchained.
Four streams, each one built around a real benchmark bake.Â
I'll bake the loaves right before each stream, and track the same benchmarks, volume, crumb, ear, crust, and flavour, so you can see exactly how rehabbing the starter improves the loaf.
You'll also learn about the flour I'm using, how to manage temperature, and the exact feeding formulas I use for each phase to maximise strength and speed.
Plus, there'll be a dedicated Q&A session at the end of each stream.
- July 20, Stream 1: I'll show you what a bake looks like with a fully depleted starter, and walk through the Wake Up phase (temperature, flour, feeding schedule, percentages), feeding it live, right there on stream.
- July 22, Stream 2: I'll show you a loaf from a starter at the end of the Wake Up phase, and what's changing going into the Supercharge phase, and why.
- July 24, Stream 3: I'll show you a loaf from a starter at the end of the Supercharge phase, and what's changing going into the Bulletproof phase, and why.
- July 27, Stream 4: I'll show you the fully Bulletproof starter and the final loaf (the actual proof). Plus, how to transition the starter back to the fridge, ongoing maintenance, and how to give it a mini booster feed before your next bake.
All streams at the same time: 12 pm ET / 5 pm UK, every session. (Recordings will be available for members)Â
Between streams: daily video updates as I feed the starter (how much it's risen, how it smells, how it tastes), plus teasers for what's coming in the next stream.
This isn't just watching, it's interacting. Videos are great, but the information flows one-way. During the livestreams, you'll get your questions answered in context. That's the feedback loop closed, in real-time.Â
You'll also get the private tutorials that go with it: the details on flour, temperature, and feeding phases that don't fit into a live stream, yours to keep as part of your membership.
What you'll walk away with
- Know the difference between a starter that's bubbly and one that's actually bulletproof, and how to tell which one you've got
- See exactly what a weaker starter does to a loaf, and what a rehabbed one can do, proven at every phase
- The full rehab process so you can take your starter from bubbly to bulletproof
- Know how to transition a starter from rehab to maintenance, without wasting time or flour
- Know how to keep it there, so your starter doesn't quietly fall back to square one in a couple of weeks without realising it
- Have direct access to ask about your own starter, live, while it's happening in front of you
- My entire Sourdough System, plus access to our very own sourdough lounge, so you can get help when you need it.
"I used to have problems with the starter and sourdough bread making overall, but after seeing your video about keeping a small amount in the fridge and bringing it back out properly, my problem ended. My starter on the counter doubles in about 4 hours now. Perfect."
— Richard Peterson, Email Community Member
But that's not all I'm going to give you.Â
To protect you against everything else
While it's the foundation of the system, your starter isn't the only potential point of failure. To protect you against everything else, you'll also get the five-step Sourdough Unchained System:
- The Starter Rehab: Get my starter rehab blueprint and video tutorials to build a bulletproof starter. As a bonus for this coming week, I'm walking you through it live, with my own starter, giving you access to my benchmark data and answering your questions live.
- The Dough-to-Basket Calibration: Get my dough calibration method to size your dough perfectly to your basket, making proofing a breeze to judge.
- The Fermentation Chain: Remove guesswork by using volume tracking to judge the starter, bulk fermentation, and the ambient proof.
- The Reboot Process: Get my process for stripping the bake back to its core principles, making it easy to execute and maximising oven spring and crumb structure.
- The Sourdough Clinic:Â In the clinic, I deep-dive into real member bakes, giving you the tools you'll need to troubleshoot effectively. You'll see weak starter case studies, along with fermentation and temperature fixes.
Alongside the five steps, you'll also have full access to the Sourdough Lounge, sit in on the recipes I'm developing, and join the monthly live Sourdough Lab, where you'll get support from me and our other Unchained bakers.
Join now to get the bonus livestream rehab event and the limited discount, both only available this coming week.Â
One week, and it's gone
I don't discount often. The last time was back in 2024.
This is the exception, because I don't know if I'll ever run this as a live cohort again, and I want to help as many bakers as possible.
So I'm giving you a lifetime $20 discount off the annual membership: $147 → $127. Closes July 19. (Automatically applied at checkout.)
And it's not just a one-off saving: $127 is locked in for as long as you stay a member, even if the membership price goes up later. Miss the 19th, and you've missed both: the live rehab cohort, and the price.
I'm also removing any risk for you. Take 7 days to explore Sourdough Unchained. If it's not for you, just let me know and I'll give you a full refund, no questions asked, no hard feelings.
Nothing left to chance
During my professional chef career, nothing was left to chance, and nothing was done just because someone said it was the right way. Every process was tested rigorously until it worked at full capability and produced the same result every time.
I brought that same standard to sourdough: design, bake, diagnose, refine.
The rehab you're about to watch is a process, built and tested that way, and you'll see it prove itself at every stage: Wake Up, Supercharge, Bulletproof, each one backed by a real loaf, not just my word for it.
"No more huge jars of wasted sourdough discard. Instructions that are clear and to the point. And even a sourdough calculator for getting your ingredient proportions perfect. Phil's videos took away the endless guessing and contradictions found in other videos."
— Kim Steinle, Community Member
Why join right now?
I don't know if I'll ever run this as a live cohort again.
That's the only reason I'm dropping the price from $147 to $127; I want as many bakers as possible to catch the whole cohort.
Miss this, and you've missed both, the cohort and the lifetime discount.
Join Now
and get my limited edition
Live Starter Rehab
$99
6-month membership
- Get the Live Starter Rehab cohort and Q&As
- Get the Live Starter Rehab recordings for 30 days
- Get the 5-step Sourdough Unchained System
- Get Magnus 5, my professional recipe calculator
- Get the Monthly Sourdough Lab workshops
- Get the Sourdough Lounge
(my private sourdough baker community) - Get my new, exclusive recipes currently in development
 7-Day Risk-Free Guarantee
Unless cancelled, memberships renew automatically
"For 1½ years, I've baked rocks and frisbees, getting me frustrated and disappointed every time. Now I feel confident. Your instructions on starters and the Sourdough Reboot are well worth the price."
— Debra, Sourdough Unchained baker
7-Day Risk-Free Guarantee
 Join Sourdough Unchained now.
Explore the training, the Sourdough Lounge, Magnus 5, and the way the whole system works.
If it doesn't feel like the right fit within seven days, email me, and I'll refund you in full.
No awkwardness. No hard feelings.
The only real risk is missing the live cohort and the lifetime discount.