# Biga

A stiff Italian pre-ferment with 50-60% hydration, used to add structure, flavor complexity, and a nuttier taste to bread and pizza doughs.

Biga is a stiff Italian pre-ferment: a portion of flour, water, and a tiny amount of yeast mixed and fermented before the final dough. With [hydration](https://fond.kitchen/glossary/hydration/) between 50% and 60%, biga has a firm, dough-like consistency that sets it apart from wetter pre-ferments like [poolish](https://fond.kitchen/glossary/poolish/). It must be torn into pieces before incorporating into the final mix, and it rewards patience with deeper flavor and stronger dough structure.

Italian bakers have relied on biga for generations in classic breads like ciabatta and Pugliese, in enriched doughs like panettone, and increasingly in artisan pizza. King Arthur Baking's professional reference notes that in Italy the word is used loosely for any pre-ferment, stiff or loose; in English-language baking it almost always means the stiff version described here.

## How biga works

The lower [hydration](https://fond.kitchen/glossary/hydration/) creates an environment where [fermentation](https://fond.kitchen/glossary/fermentation/) proceeds more slowly and produces different byproducts compared to a 100% hydration poolish. Here is what that means for your dough:

- **More dough strength**: The stiffer consistency encourages [gluten development](https://fond.kitchen/glossary/gluten-development/) during the long ferment, giving the final dough better structure
- **Nuttier flavor**: The drier environment favors specific organic acids and alcohols, creating a deeper, toastier taste profile rather than the mild tang of poolish
- **Better volume and oven spring**: Stronger gluten means the dough traps gas more effectively, producing taller loaves and a more structured crumb
- **Longer shelf life**: The acids and enzymes produced during the long ferment help the finished bread stay fresh a little longer

The science comes down to water activity. Less available water slows yeast metabolism, so fermentation takes longer. That extra time lets enzymes break down starches into sugars, developing flavors that a short, fast ferment cannot match.

## Biga formula

**Standard Biga Recipe (55% hydration)**
- Flour | 100g (100%)
- Water | 55g (55%)
- Yeast (instant) | 0.1g (0.1%)
- Fermentation | 12-16 hours at 18-20°C (longer when cooler)
- Texture | Shaggy, stiff dough ball

The yeast amount is deliberately tiny. With only 0.1g of instant yeast per 100g of flour (the figure both BAKERpedia and King Arthur Baking give), fermentation stays slow and controlled. Using more yeast speeds things up but sacrifices flavor complexity. The result should feel firm and slightly rough, not smooth like a finished bread dough.

Express the formula in [baker's percentage](https://fond.kitchen/glossary/bakers-percentage/) to scale it easily.

### Scaling your biga

Most biga bread recipes call for 20-40% of the total flour weight as biga. For a pizza dough using 500g total flour:

- **20% biga**: 100g flour, 55g water, 0.1g yeast (subtle flavor boost)
- **30% biga**: 150g flour, 82g water, 0.15g yeast (balanced flavor and structure)
- **40% biga**: 200g flour, 110g water, 0.2g yeast (pronounced nutty flavor, strong structure)

Higher biga percentages give more flavor but require careful hydration management in the final dough, since the biga flour has already absorbed water.

## How to make biga

1. Measure ingredients by weight using a [kitchen scale](https://fond.kitchen/glossary/kitchen-scale/). Precision matters: even 5g of extra water changes the consistency.
2. Combine flour and water in a bowl. Mix until no dry spots remain. The mixture will be shaggy and stiff.
3. Add yeast and work it in. Knead briefly, 2-3 minutes, just enough to distribute the yeast evenly. Do not develop the gluten fully.
4. Shape into a rough ball, cover the bowl with plastic wrap or a damp towel.
5. Ferment at room temperature (18-20°C / 64-68°F) for 12-16 hours, or longer in a cooler room.

The biga is ready when it has roughly doubled, the surface is slightly domed, and it smells pleasantly yeasty, not sour. To incorporate it, tear the biga into walnut-sized pieces and add them to your final dough mix along with the remaining flour, water, salt, and [yeast](https://fond.kitchen/glossary/yeast-types/).

## Timing and temperature

**Biga Fermentation Schedule**
- 15-16°C (59-61°F) | 18-24 hours | Maximum flavor development, ideal for weekend bakes
- 18-20°C (64-68°F) | 12-16 hours | Standard overnight biga, the most common approach
- 22-24°C (72-75°F) | 8-12 hours | Warmer kitchens, shorter schedule

BAKERpedia puts the usual window at 8-16 hours between 15 and 20°C; the cooler end of that range is what stretches a biga to a full day.

### Reading your biga

- **Ready**: Roughly doubled, slightly domed top, pleasant yeasty aroma, springs back slowly when poked
- **Under-fermented**: Has not doubled, dense when torn open, bland smell. Give it more time.
- **Over-fermented**: Collapsed or concave surface, sour or alcoholic smell, sticky and slack texture

Biga tolerates a wider fermentation window than poolish because the lower water activity acts as a natural brake on yeast activity. A biga left at 24°C for 24 hours will over-ferment, though. Adjust time and temperature together.

### Cold fermentation option

For even more flexibility, you can start biga at room temperature for 2-3 hours, then move it to the fridge (4-6°C) for up to 48 hours. This [cold fermentation](https://fond.kitchen/glossary/cold-fermentation/) approach slows things down further and develops even more complex flavors. Pull it out 1-2 hours before mixing to take the chill off.

## Common uses

- **Ciabatta**: Many Italian bakers prefer biga over poolish for ciabatta. The extra structure supports the high hydration of the final dough while still producing an open crumb
- **Pugliese bread**: This traditional bread from Puglia relies on biga for its characteristic chewy texture and nutty crust
- **Artisan pizza**: Biga adds complexity to pizza dough without the extreme extensibility of poolish. It works especially well in [Neapolitan-style pizza](https://fond.kitchen/guides/pizza-dough/neapolitan-pizza-dough/) and [NY-style pizza dough](https://fond.kitchen/guides/pizza-dough/ny-style-pizza-dough/) where you want structure and flavor
- **Panettone**: Some recipes use biga as the initial ferment before building the enriched dough with butter and eggs
- **Focaccia and flatbreads**: A short biga (8-12 hours) adds subtle depth without overcomplicating the recipe

## Poolish vs biga

Both are pre-ferments, but they behave differently. For a deeper comparison, see the full [poolish vs biga guide](https://fond.kitchen/guides/pizza-dough/poolish-vs-biga/).

- Hydration | 100% (batter-like) | 50-60% (stiff dough)
- Fermentation | 8-16 hours | 12-24 hours
- Flavor | Mild, slightly creamy | Nutty, toasty, complex
- Dough effect | More extensibility, open crumb | More strength, better volume
- Best for | Baguettes, Roman pizza, focaccia | Ciabatta, Pugliese, Neapolitan pizza
- Forgiveness | Narrow window, over-ferments fast | Wide window, tolerates timing shifts

**When to choose biga**: You want a nuttier flavor, more dough strength, or a longer fermentation window. Biga is forgiving if you cannot mix the dough at the exact right moment.

**When to choose [poolish](https://fond.kitchen/glossary/poolish/)**: You want a more open crumb, milder flavor, or a shorter timeline. Poolish mixes into the final dough more easily since it is already liquid.

## Troubleshooting biga

**Common Biga Problems**
**Biga did not rise**
The environment may be too cold, or the yeast may be dead. Check that your yeast is fresh and that room temperature is at least 18°C. A tiny amount of yeast needs warmth to get going.
**Biga is too sticky**
The hydration is too high. Next time, reduce water by 5g. If it is already mixed, dust with flour and let it ferment. It will still work, just with slightly different characteristics.
**Biga smells sour or alcoholic**
It over-fermented. You can still use it if the smell is mild, as the sourness will dilute in the final dough. If it smells strongly of alcohol or vinegar, start over.
**Biga is crumbly and won't hold together**
The hydration is too low. Add a few grams of water and knead briefly. Aim for a dough that is stiff but cohesive.
**Final dough is too tight after adding biga**
The biga added a lot of pre-developed gluten. Let the final dough rest longer (try a 30-minute [autolyse](https://fond.kitchen/glossary/autolyse/) before adding salt) and use gentle [folding](https://fond.kitchen/glossary/folding/) during [bulk fermentation](https://fond.kitchen/glossary/bulk-fermentation/) rather than aggressive kneading.

## Frequently asked questions

**Can I refrigerate biga?**
Yes. Start it at room temperature for 2-3 hours, then refrigerate for up to 48 hours. Pull it out 1-2 hours before mixing to warm up. Cold biga develops even more complex flavors.

**How much biga should I use?**
Most recipes use 20-40% of the total flour as biga. Start with 25-30% for a balanced flavor boost. Higher percentages (40%+) give stronger flavor but require adjusting the final dough hydration.

**Can I use instant yeast instead of fresh?**
Yes. Use the same tiny amount: 0.1g per 100g flour. Both instant and active dry yeast work. Fresh yeast can also be used at roughly 0.3g per 100g flour.

**What flour should I use for biga?**
The same flour you plan to use in the final dough. For pizza, that is typically Type 00 or bread flour. Strong flours (high protein) handle the long fermentation better without breaking down; the [pizza flour guide](https://fond.kitchen/guides/pizza-dough/pizza-flour-guide/) covers which protein and W ranges suit which style.

**Is biga the same as a sourdough starter?**
No. Biga uses commercial yeast and ferments overnight, 12 to 24 hours depending on temperature. A [sourdough starter](https://fond.kitchen/glossary/sourdough-starter/) — or the [levain](https://fond.kitchen/glossary/levain/) built from it — uses wild yeast and bacteria, and takes days to develop. The flavors are different: biga is nutty and mild, sourdough is tangy and acidic.

**What does biga bread taste like?**
Biga bread has a nuttier, toastier flavor compared to straight-dough bread. The long, slow fermentation produces subtle caramel and wheat notes you don't get from a quick rise. A 30% biga fermented overnight at around 18°C is a common starting point that balances flavor and schedule.

## In Fond

Fond's Pizza Workshop has biga as a built-in pre-ferment option. Select it, set the share of flour that goes into the biga, and the [pizza dough calculator](https://fond.kitchen/tools/pizza-dough-calculator/) splits flour, water and yeast between the biga and the main dough automatically. The workshop builds the biga at 55% hydration and schedules 16 to 24 hours for it to ripen, so a same-day schedule is not offered when a pre-ferment is selected.

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*Published: 2026-02-01 | Last updated: 2026-09-16*

*Category: techniques*

[View on Fond](https://fond.kitchen/glossary/biga/)