Victorian Bakers, 03:29, BBC Four

Description

Grant Campbell, featured on the BBC Four programme Victorian Bakers:

"Getting bubbles into bread using yeast to slowly produce the carbon dioxide, the Victorians discovered what carbon dioxide was and how to produce it themselves, and how to make carbonated water with that.

If you mix carbonated water with flour to create a dough, keeping it all under pressure, you get a lot of carbon dioxide disolved in the dough, and when you release the pressure, the dough expands and you can put it straight in the oven and bake it and you haven't had to wait around for the yeast to produce the carbon dioxide."