Froth!: The Science of Beer

197 Pages·2009·4.207 MB·English

by  Mark Denny

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Mark Denny
THE JOHNS HOPKINS UNIVERSITY PRESS
BALTIMORE
∫ 2009 The Johns Hopkins University Press
All rights reserved. Published 2009
Printed in the United States of America on acid-free paper
2 4 6 8 9 7 5 3 1
The Johns Hopkins University Press
2715 North Charles Street
Baltimore, Maryland 21218-4363
www.press.jhu.edu
Library of Congress Cataloging-in-Publication Data
Denny, Mark, 1953–
Froth! : the science of beer / Mark Denny.
p. cm.
Includes bibliographical references and index.
ISBN-13: 978-0-8018-9132-8 (hardcover : alk. paper)
ISBN-10: 0-8018-9132-9 (hardcover : alk. paper)
1. Beer. 2. Brewing. I. Title.
TP577.D476 2009
641.6%23—dc22 2008022646
A catalog record for this book is available from the British Library.
Special discounts are available for bulk purchases of this book. For more information,
please contact Special Sales at 410-516-6936 or [email protected].
The Johns Hopkins University Press uses environmentally friendly book materials,
including recycled text paper that is composed of at least 30 percent post-consumer
waste, whenever possible. All of our book papers are acid-free, and our jackets and
covers are printed on paper with recycled content.
To friends from an earlier era—
John Hewitt, who taught me how to drink beer;
John Hardy, who taught me how to make it;
and my University pals, who taught me why
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Contents
Acknowledgments ix
Introduction 1
One. The Evolution of Beer 11
Two. How to Make Good Beer at Home 53
Three. Yeast Population Dynamics 78
Four. Brewing Thermodynamics 93
Five. Bubbles 113
Six. Fluid Flow 137
Seven. Final Thoughts 163
Glossary 169
Bibliography 175
Index 179
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Acknowledgments
When I first pitched the suggestion of a beer-and-physics book to the
Johns Hopkins University Press Editor-in-Chief, Trevor Lipscombe, he
provided much encouragement. Later, during the fermentation stage, I
was helped significantly by Horst Dornbusch, who influences beer and
beerocrats on two continents, and who obtained for me special permis-
sion to raid the photo archives of the Bavarian Brewers Federation. The
book has been brought into top condition at JHUP by copy editor Caro-
lyn Moser and art director Martha Sewall. I thank you all.
In recent months my homebrewing has benefited from the gener-
osity of John Rowling, who let me loose in his garden to pick hops.
Cheers, John.
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