If you're a bread and pizza lover, you've probably already heard of flour blends: a mixture of different types of flour. This technique isn't the result of some recent trend but rather a way to obtain a product with specific properties, such as good toughness and extensibility, a certain capacity to absorb water, and more complex flavors. Let's look in detail at why you should combine two or more flours together and what to look for.
Forces That Combine
This isn't the first time we've discussed flour strength (W)—that is, the dough's ability to develop gluten, absorb water, and retain leavening gases, resisting deformation—nor the relationship between tenacity and extensibility (P/L). A strong flour generally contains more protein and is able to create a resistant gluten network, capable of retaining leavening gases and suitable for long fermentations. A weak flour, on the other hand, creates a less strong network and is therefore suitable for less structured products such as biscuits, tarts, or cakes.
Mixing two different flours means creating a balance between strength and extensibility, resulting in a stable dough that rises evenly and develops regular bubbles during baking. So, you're not just combining flours, you're modifying the dough's behavior during kneading, rising, and baking.
How Flavor and Nutritional Values Change
There's another aspect that can encourage you to combine different flours: flavor. Each type, in fact, can impart a specific aroma to the final result: semolina, for example, gives bread and pizza a more intense aroma, a more rustic texture, and a slightly more golden color. Whole wheat flour, on the other hand, thanks to the presence of bran, adds a cereal aroma and a more homely flavor. If you then add sourdough starter to all this, the result will be even more interesting: the fermentation will further enhance the aromas of the flours—along with those of the yeast—giving life to a product with even more complex aromatic notes.
Nutritional input is equally important . Different types of flour can enrich the final product: recent research has shown that adding whole grain or fiber-rich flours increases nutritional value as well as improving flavor. A study by the University of São Paulo, for example, demonstrated how alternative flours, such as sunflower seed flour, can increase protein and antioxidant content while maintaining good product quality.
Pay Attention to Hydration
The strength of the flour, and consequently the amount of protein it contains, also determines its ability to absorb water: a stronger flour absorbs more than a weaker one. Combining two or more flours of different strengths can increase or decrease the amount of liquid required and better control the dough's consistency. When combining two flours, it's essential to pay attention to their properties: one of the two may contain, for example, starch damaged by milling, thus absorbing more water. Alternatively, whole wheat flours —or at least less refined ones—contain a higher percentage of bran, which requires greater hydration. The percentage of water must, however, be commensurate with the type of flour used: too much water can result in a sticky dough that's difficult to work with. It's therefore important to carefully balance the water with the chosen mix, taking into account the characteristics of each flour.
Why Create a Flour Blend and Which Ones Should You Use?
In short, mixing two flours allows you to control the dough's behavior, something that isn't always possible using just one. Each flour has specific characteristics: some are stronger, providing structure and holding up to long leavening times, but can produce a stiffer dough. Others, on the other hand, are weaker, making them easier to roll out and handle, but also less stable. When you combine them, you create a balance between these two tendencies, obtaining a dough that's stronger but also more extensible. All of this, in practical terms, translates into a dough that's more workable and better able to retain leavening gases more uniformly, resulting in a product with a more regular structure and a better consistency. Furthermore, flours are composed of starches, fibers, and enzymes, which vary according to the type and also react differently. Some types of starch, for example, absorb more water and promote fermentation, but fibers can slow it down or alter the structure of the gluten: blends, therefore, allow you to adjust hydration, leavening times, and dough stability.
In addition to understanding why you should combine two flours, it's also important to understand which ones to choose. There's no single answer; it all depends on the type of result you're aiming for. For example, for a highly hydrated pizza, you can create a blend of a strong and a medium flour, to support the structure during leavening and baking, while maintaining good workability when rolling out. Or, if you want to try your hand at making ciabatta, you can combine a strong and a medium flour with a percentage of semolina, to enhance the flavor and crispiness of the crust, always remembering to balance the hydration. In any case, the secret lies in doing small experiments, each time noting the percentages of the various flours used, the water used, and the maturation and leavening times, observing how the dough reacts. Only in this way will you be able to create increasingly precise blends and achieve exactly the result you desire.
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