Using 20% vs 50% starter… what does that even mean?
If you’re newer to sourdough, you’ve probably seen percentages and thought, “cool cool cool… no idea what that means.” 😅
So let’s make it real-life simple.
Say your recipe calls for:
- 100g starter
- 500g flour
That means you’re using 20% starter. Easy.
Now… let’s say you got a little chaotic (we’ve all been there), didn’t measure right, or just decided “more starter = better, right?” and you used 250g starter instead.
Congrats, you just jumped to 50% starter.
So what actually changes? A lot, but nothing scary.
1. Fermentation time (aka how fast this dough is gonna move)
- 20% starter: Slow and steady. Think 4–8 hours for bulk. This is your “I’ll deal with you later” dough. Great for overnight, less babysitting.
- 50% starter: This dough is in a HURRY. 2–4 hours and it’s like “hello?? I’m ready???”
Perfect if you want bread today, but you do have to pay attention.
👉 If your kitchen runs warm, 50% can go from perfect to “oops” real quick.
2. Flavor (aka how sour are we getting here)
- 20% starter: More time = more tang = more personality. This is your classic sourdough flavor.
- 50% starter: Faster process = milder flavor. Still good, just less punchy.
👉 If you love that bakery-style tang, stick with 20%.
👉 If you’re feeding picky eaters (or yourself on a “not-too-sour” day), 50% is your friend.
3. Dough handling (aka is this gonna fight me or not)
- 20% starter: Nice and cooperative. Gluten stays stronger longer, easier to stretch, fold, shape without wanting to throw it across the kitchen.
- 50% starter: Things can get a little… sticky and dramatic if you let it go too long. The dough breaks down faster.
👉 20% = forgiving
👉 50% = “watch me closely or I will ruin your day”
4. Final bread (the part we actually care about)
- 20% starter: Open crumb, crusty crust, lasts longer. Basically your “look what I made” loaf.
- 50% starter: Softer, a little denser, less crusty. More of an everyday, sandwich-type vibe.
Real-life tips (because we’re not baking in a lab here)
- 20% uses less starter (your jar will thank you)
- 50% is great if your starter is super active and you want to use it up
- If you’re unsure → start with 20% and then play around
For reference with 500g flour:
- 20% = 100g starter
- 50% = 250g starter
Bottom line:
- 20% = slower, tangier, more control
- 50% = faster, milder, a little more “watch this closely” energy
Neither is wrong—it just depends on your mood, your schedule, and how chaotic you’re feeling that day 😂
And that’s it. Hopefully this makes it all feel a lot less intimidating and a lot more doable.
