Margaret McWilliams, Ph.D., RDN, is Professor Emerita at California State University–Los Angeles. There, she taught food science and served as Department Chair and Program Director of the Coordinated Dietetics Program, which she co-founded. Dr. McWilliams earned her B.S. and M.S. degrees at Iowa State University and her Ph.D. at Oregon State University. She belongs to many professional organizations, including the Institute of Food Technologists and the Academy of Nutrition and Dietetics. Her current texts include: Food Around the World: A Cultural Perspective, Fourth Edition, 2014 (Prentice Hall); Experimental Foods Laboratory Manual, Eighth Edition, 2008 (Prentice Hall); Food Fundamentals, Tenth Edition, 2012 (Prentice Hall); Illustrated Guide to Food Preparation, Eleventh Edition, 2012 (Prentice Hall); and Fundamentals of Meal Management, 2005 (Prentice Hall).