biological, chemical or physical substances that can be harmful when consumed in sufficient quantities
LABENSKY, SARAH R.; HAUSE, ALAN M.; LABENSKY, STEVEN R.; MARTEL, PRICILLA, ON COOKING: A TEXTBOOK OF CULINARY FUNDAMENTALS, 4th Edition, ©2007. Electronically reproduced by permission of Pearson Education, Inc., Upper Saddle River, New Jersey.

