Biga Calculator

Biga is a type of Italian pre-ferment — a mixture of flour, water, and a small amount of yeast that is allowed to ferment slowly before being incorporated into the final dough. Unlike poolish (a liquid pre-ferment), biga is a stiff dough with hydration typically ranging from 45-60%. This low hydration creates a dense, shaggy mass that develops slowly, producing complex flavors, improved texture, and better keeping quality in the finished bread.

Biga is the traditional pre-ferment for many classic Italian breads, including ciabatta, focaccia, and pane toscano. The long, slow fermentation — typically 12-18 hours at cool room temperature — allows wild yeasts and lactic acid bacteria to produce a wide range of flavor compounds that cannot be achieved with a straight dough method. The result is bread with a more complex, slightly tangy flavor, a more open crumb structure, and a crispier crust.

The key characteristics of biga are its stiff texture and minimal yeast. The low hydration restricts yeast activity, slowing fermentation and allowing flavor development to take precedence over volume. The small amount of yeast (typically 0.02-0.2% of flour weight) further controls the pace, ensuring that the biga develops properly over 8-24 hours without over-fermenting.

The biga calculator determines ingredient quantities based on the total flour in your recipe, the percentage of that flour to be used in the biga, and the desired hydration level.

There are three main types of pre-ferments used in bread baking, each with distinct characteristics:

Biga produces the most subtle flavor development, making it ideal for Italian breads where the wheat flavor should remain prominent. Poolish creates more acidity and works well for French breads. Pate fermentee (old dough) provides the strongest pre-ferment flavor and is used in bagels and some artisan breads.

Create your biga recipe in a few simple steps:

1. Enter total recipe flour: Input the total grams of flour your final recipe calls for.
2. Set biga percentage: Use the slider to choose what percentage of the total flour goes into the biga (typically 50%).
3. Set biga hydration: Adjust the hydration level (45-65%) based on the texture you want. Lower hydration produces a stiffer, more flavor-focused biga.
4. Set fermentation time: Choose how long to ferment the biga (8-24 hours). Longer fermentation develops more flavor but requires less yeast.
5. Review the recipe: The calculator displays the biga ingredients and the remaining flour needed for the main dough.

Ciabatta is the most famous bread made with biga. The open, irregular crumb and thin, crispy crust of ciabatta are directly attributable to the long, slow fermentation of a stiff biga. The biga develops the complex flavors and extensible gluten structure that allow ciabatta to achieve its characteristic texture.

Focaccia benefits from biga's flavor development, which adds depth to the olive oil-enriched dough. The extended fermentation also improves the dough's ability to hold large air bubbles, creating the light, airy texture that distinguishes good focaccia from dense, flat versions.

Artisan bakeries use biga as a production tool because it can be prepared the day before baking, allowing flavor development to occur overnight without adding extra work to the baking schedule. The biga also provides a buffer against temperature and timing variations, making the final dough more forgiving and consistent.