Stop Guessing Bulk Fermentation (Most PeopleGet This Wrong)

Most bakers are trying to answer the wrong question. “When does bulk fermentation end?” The problem is… bulk fermentation doesn’t end when you shape your dough. It ends when your dough goes into the oven. And that completely changes how you should approach it. In this video, I’m comparing three identical sourdough doughs, spaced 90 minutes apart, to show you exactly what happens when you end bulk: Too early At the right time Too late Same flour. Same starter. Same process. The only difference… when bulk fermentation is ended. But here’s the key point most people miss: What happens after shaping matters just as much as what happens before. 🧠 WHY THERE IS NO “PERFECT TIME” There is no universal timing for bulk fermentation. Not 4 hours. Not 6 hours. Not “until it doubles.” Because fermentation doesn’t follow the clock. It follows: Temperature Dough strength Starter activity And your process after shaping ❄️ YOUR FRIDGE CHANGES EVERYTHING If your dough continues fermenting in the fridge (like mine does above ~4°C / 39°F): You are still adding hours of fermentation after bulk. Which means: If you push bulk too far… you’re not finishing fermentation… you’re overdoing it. 👉 In this case: End bulk earlier If your fridge is colder and fermentation slows right down or stalls: You are adding very little fermentation after shaping. Which means: If you end bulk too early… your dough will never fully develop. 👉 In this case: Push bulk further 🎯 THE REAL QUESTION Stop asking: “When does bulk fermentation end?” Start asking: “How much fermentation do I want before shaping… and how much after?” 🔍 WHAT YOU SHOULD LOOK FOR Instead of chasing one signal like: doubling time bubbles jiggle You need to read the dough as a whole. I break this down in the video, but in simple terms you’re looking for: Gas → visible fermentation Structure → dough still holds shape Feel → light, elastic, controlled When those three align… you’re ready. 🚫 WHY MOST BULK “RULES” FAIL Most advice online only works in a very specific context. “Wait until it doubles” “Bulk for 6 hours” “Look for bubbles” These aren’t wrong… they’re just incomplete. Because they ignore what happens after bulk. 🔥 KEY TAKEAWAY There isn’t a single moment to end bulk fermentation. There is only the moment that fits your process. If you understand this, you stop: guessing copying other people chasing timings And you start: reading your dough controlling fermentation getting consistent results 👇 FREE SOURDOUGH RESOURCES If you want to build a starter properly and understand how to manage it: https://russellpeacebaker.com/make_a_... 👉 Download my FREE Starter Guide: https://russellpeacebaker.com/starter 👉 Weekly Starter Routine (low waste, simple system): https://russellpeacebaker.com/weekly 👉 Full Sourdough Recipe (The Mighty White): https://russellpeacebaker.com/mightyw... Follow My Sourdough Journey Elsewhere Instagram -   / russellpeace_baker   Facebook -   / russellpeacebaker   TikTok -   / russellpeace_baker   #sourdough #sourdoughstarter #breadbaking #homebaking #sourdoughbread Chapters 0:00 - Introduction 1:29 - The Bulk Checks 3:16 - Has it doubled? 4:29 - Bulk for time 5:30 - The jiggle test 6:58 - Are there bubbles 8:47 - The Windowpane test 10:53 - Light and Airy? 12:11 - Key learning moment 13:36 - Summary of the tests 15:00 - Under fermented loaf 17:13 - Well fermented loaf 18:18 - Over fermented loaf 19:05 - Why so similar? 20:35 - Conclusion