Cooking Tips Information

Understanding Baking: How Yeast Works


Did you ever wonder why flour tastes like sawdust but a French or Italian bread made with that same flour and little else has a pleasant, sweet taste?

Bread wouldn't be bread without yeast and yeast can't work without sugars. Yeast is alive-living organisms-and living organisms need food for fuel, in this case, simple sugars. But flour is mostly starch and table sugar (sucrose) is too complex for the yeast before fermentation. Amylase and invertase, enzymes present in the flour or created by the yeast, break down the starch molecules into sugars. Some of these simple sugar molecules become food for the yeast; others create the sweet flavor we find in a fine bread-even a French bread where there is no sugar added.

As the yeast feeds on the sugar, it creates two digestive byproducts-alcohol (ethanol) and carbon dioxide. The carbon dioxide is what leavens the bread-carbon dioxide gases filter through the dough creating loft. The alcohol is evaporated in baking.

The biological and chemical actions taking place as the bread ages and rises are called fermentation. Generally, a long, slow fermentation makes for better flavor, texture, and moisture retention. Many fine breads call for "retarding" or slowing down the growth of the yeast with refrigeration. If dough is refrigerated, the yeast grows more slowly. Fermentation still takes place as the amylase enzymes work within the dough and sugar is released albeit at a slower rate. When the dough is warmed and the growth of the yeast takes off, there is plenty of sugar present for the yeast and an excess of sugar to sweeten the bread.

When yeast grows more slowly, we find the richer, fuller flavor of breads made with retarded dough. In the previous article, we discussed a focaccia that uses refrigeration to slow down the growth of the yeast and create the desired crumb and flavor. Is it a good bread without retarding? Yes, but retarding does give it desirable flavor overtones and a more open crumb.

Read on for the printable version of How Yeast Works >>

This article was taken from About Baking: Ingredients and How They Work and is available free for download.

© 2004, The Prepared Pantry


MORE RESOURCES:

Monsters and Critics.com

Rafael Nadal shares cooking tips in new TV ad
Monsters and Critics.com
Wimbledon champ Rafael Nadal is sharing his cooking tips in a new ad that is running on US TV. ...

and more »


The Waterland Blog (blog)

Learn Healthy Cooking Tips At The Des Moines Waterfront Farmers Market
The Waterland Blog (blog)
This week at the Des Moines Waterfront Farmers Market, Chef Ariel Bangs is demonstrating tips and techniques for healthy cooking using produce found right ...



Allrecipes.com Launches Original Online Video Series: "Allrecipes.com What's ...
PR Newswire (press release)
... resource for cooks of all skill levels seeking trusted recipes, entertaining ideas, everyday and holiday meal solutions, and practical cooking tips. ...

and more »


Orlando Sentinel

Ice cream is a cool creamy indulgence
Orlando Sentinel
Shirley O. Corriher, cooking instructor and author of Cookwise: The Hows and Whys of Successful Cooking (William Morrow, $28.50), offers these cooking tips ...

and more »


Consumers can now Follow Blog on SalmonInSeconds.com for Nicole's Cooking Tips ...
PR Web (press release)
Chef and busy mom Nicole Straight hosts new blog on SalmonInSeconds.com to demystify buying, prepping and cooking Norwegian Salmon. ...



CVB: Cooking tips and trends
Post-Bulletin
The Austin Convention and Visitors Bureau is excited to announce its first-ever "Cooking Tips and Trends" class in partnership with the Hormel Historic Home ...



Morsels: Cooking demo set at Salon Blue Ridge
BlueRidgeNow.com
Join Park Ridge Hospital Chef Chris Aquilino for this hands-on cooking demo and lecture, featuring nutritious recipes, cooking tips and healthy natural food ...



New York Times (blog)

We Made It Ourselves | Sweet Cheeks Baby Food
New York Times (blog)
A culinary neophyte, Karis drew upon her Midwestern heritage and got cooking tips from her local Beantown butcher. Before she knew it, she was a good cook. ...



Examiner.com

Exclusive: Chef Michael Symon discusses 'Cook Like an Iron Chef', inspiration ...
Examiner.com
But you're not necessarily going to learn cooking tips and recipes. But the thing that is great about 'Iron Chef' is the theatre of it and how beautiful it ...

and more »


Summer cooking should be an adventure
Minuteman News Center
I was asked to offer some hot summer cooking tips, and I'm delighted to oblige! Everyone knows that summer cooking is just plain fun, ...


Google News

home | site map
© 2006