Biga or poolish – chewy rim or airy crumb
Biga is dry and builds chew; poolish is wet and opens up the crumb. Hydration, yeast and timing for both, and how to choose between them.
Quick answer: Biga is dry (about 45–50 % hydration) and gives a rim with more chew. Poolish is wet (100 % hydration) and gives an airier, more open crumb. Both are preferments that add flavour and structure before the main dough is mixed – the difference lies in the amount of water, not in the principle.
Hydration and yeast quantity at a glance
| Biga | Poolish | |
|---|---|---|
| Hydration | About 45–50 % | 100 % |
| Yeast quantity | About 1 % | 0.1–0.2 % |
| Fermentation time | 12–16 hours, 16–18 °C | 8–16 hours, room temperature |
| Consistency | Firm, dough-like | Liquid, like a thick batter |
A full walk-through of each method, with schedule and step-by-step instructions, is in biga and poolish.
Flavour profile – what actually sets them apart
Biga’s low water content makes the yeast and enzymes work more slowly and in a more concentrated way, giving a stronger, slightly alcoholic-tangy aroma and a rim with real chew. Poolish’s high water content lets the enzymes work more freely and quickly, giving instead a milder, lightly tangy smell and a considerably airier, more irregular crumb.
Chew in the rim – biga wins, poolish is airier
If you want a rim that gives clear resistance when you bite into it, and a more ”bread-like” structure, biga is the right choice. If you’d rather have an open, bubbly crumb with large, irregular holes, poolish is the clearer choice. Neither is ”better” in an absolute sense – it’s about which texture you’re after.
When to choose one over the other
- Choose biga if you want more chew, a stronger aroma, and you don’t mind handling a stiffer preferment.
- Choose poolish if you want an airier, more open rim and a milder smell, and you can keep an eye on a preferment that’s more time-sensitive – poolish passes its peak faster than biga and turns watery if it’s left too long.
How you build the main dough from there
Whichever you choose, the preferment is mixed in with the rest of the flour, water, salt and a small amount of extra yeast for the main dough – rather like adding an already flavourful ingredient instead of starting from scratch. See the full steps in the respective guide – biga and poolish – and work out the whole schedule, preferment included, in the calculator.
Frequently asked questions
Can I mix half biga and half poolish in the same dough? That isn’t an established standard approach, and there’s no documented advantage that outweighs the extra complexity – better to pick one and get to know it properly.
Which needs more planning? Both need 12–16 hours of preferment fermentation, but poolish is more sensitive to exact timing since it goes from perfect to overproofed and watery faster. Biga has a bit more margin.
Which is easiest for a beginner to handle? Biga, because it’s firm and behaves more like an ordinary dough. Poolish is liquid and can feel unfamiliar to work with the first time, even though mixing it is actually simpler.
Want to see the difference in practice?
We have a test set up to compare biga and poolish side by side with the same flour and the same final hydration – rim height, structure in cross-section and smell: biga vs poolish, our planned test. The results will be added once the runs are done and repeated.
Read the full recipes in biga and poolish, see the house recipe they build on in Neapolitan pizza dough, and work out the whole schedule in the calculator.
