Читать книгу The New English Kitchen: Changing the Way You Shop, Cook and Eat - Rose Prince - Страница 21

The breadmaking process is easier to understand once you know a little piece of molecular chemistry. Yeast gives dough its oomph, but it needs gluten to do so. Live yeast makes bubbles of carbon dioxide in the soft, elastic dough. The legend of the first yeast goes that a cook left a piece of dough near a vat of beer and some of the wild yeasts from the ale got into the dough. The cook noticed the bubbles in the bread – the rest is history.

When water comes into contact with flour, it swells the proteins in it. Kneading the dough by hand or machine allows these proteins to blend, changing the molecular structure and forming the all-important gluten.

You must choose if you want to add fat to your bread. Fat improves bread’s keeping qualities and gives it a denser texture. It can, however, prevent the dough becoming soft and elastic if it is rubbed into the flour before the water is added, because this delays the essential formation of gluten. Gluten is to dough what steel frames are to skyscraper construction. Its strength allows large spaces of air to form and hold within the dough. The best way to get bread going quickly is to add fat after the water. I do this by oiling the bowl that holds the dough as it rises, then mixing it in before the bread is shaped.

It is fine to leave fat out of bread; it simply results in a lighter dough with large bubbles. If you make small quantities of bread frequently, or rolls, there is no real need to add fat.

Two things kill yeast: too much salt, and heat. Don’t be too free with salt – follow the amount specified in recipes until you get to the stage where experience teaches you how much to add. And don’t leave the dough to rise anywhere too hot, such as on a radiator or beside a fire. In fact, bread doesn’t have to be left in a warm place to rise at all, and will even rise perfectly happily – though slowly – in the fridge. The important thing is that it should be in a draught-free place.