SourTube: Know When Bulk Fermentation Is Done (feat. Ang Bakes)

📺 SourTube pick: This is a curated video — we didn't make it, we just love it and think you will too. All credit belongs to the creator below. Watch it, learn from it, then go show them some love.

Today's pick: How to Know When Sourdough Bulk Fermentation Is DONE (6 Signs to Look For in Your Dough!)

Creator: Ang of Ang Bakes
Watch on YouTube: How to Know When Sourdough Bulk Fermentation Is DONE
More from Ang: @AngBakes on YouTube for beginner-friendly sourdough bakes and from-scratch kitchen inspiration

If the embed doesn't load, watch it directly on YouTube here.

Why we picked this one

Bulk fermentation is the moment where most beginners quietly fall apart. Everything up to this point had a schedule — mix, fold, fold again — and then suddenly the recipe just says "wait until the dough is ready" and you're staring at a bowl of goop like… ready HOW, exactly? 😅 We've all been there. You either shape it way too early and get a dense little brick, or you wait too long and end up with soup.

Ang from Ang Bakes gets it, because she's lived it. She lays out six clear signs to watch for — the jiggle, the domed top, the bubbles, the pillowy feel, the poke test, and the rise — with real footage so you can actually SEE what she means instead of trying to decode a paragraph of adjectives. The visual side-by-sides are the whole game here; once you've seen a properly fermented dough wobble like a bowl of jelly, you never un-see it.

The detail we love most? Her permission slip. She straight-up tells you that you don't need ALL six signs — if you're hitting most of them, you're good to shape. That one sentence will save so many beginners from the "just five more minutes" spiral that turns a perfectly ready dough into an overproofed mess. Watch the dough, not the clock, indeed.

What you'll learn

• The 6 signs your bulk ferment is done: the jiggle test, a rounded domed surface, bubbles around the edges, a pillowy airy top, the poke test, and a 30–75% rise in volume.
• Why "watch the dough, not the clock" actually works: how temperature, starter strength, and your kitchen change the timeline — and how to adjust your eyes instead of panicking at hour six.
• The 4-out-of-6 rule: you don't need every single sign to be a green light. Recognizing when "good enough to shape" is actually perfect.

Our two cents to go with it

Two beginner things worth knowing before you hit play:

1. Film yourself the first few times. Seriously — take a quick phone video of your dough when you THINK it's ready, then note how the loaf turned out. After two or three bakes you'll have your own personal reference library, and the jiggle that used to confuse you will feel obvious. Ang shows you what to look for; your own footage teaches you to recognize it in YOUR kitchen.

2. Underproofed is the more common mistake. Most first-timers shape too early out of fear of overproofing, and end up with dense, gummy loaves. If your dough is jiggly and bubbly and mostly meeting the signs, stop second-guessing and shape it. A slightly early shape bakes into a fine loaf; a timid baker staring at a ready dough doesn't get you anywhere.

If watching this gets you itching to bake but your starter is weak, sluggish, or just stressing you out — that's literally why we dehydrate ours and ship it ready to wake up in a few days. A strong starter makes every one of these six signs easier to hit. Squirrelly Girl Starter is here when you need it. 🐿️

Loved this video? Go tell Ang — like and subscribe on YouTube so she keeps making them.

#sourtube #bulkfermentation #sourdoughforbeginners #sourdoughtechniques #sourdoughbread #angbakes