Cactus plants are precious natural resources that provide nutritious food for people and livestock, especially in dryland areas. This book provides fresh insights into the plant’s genetic resources, physiological traits, soil preferences and vulnerability to pests, providing invaluable guidance on managing the resource to support food security. The publication also offers tips on how to exploit the plant’s culinary qualities as has been done for centuries in its native Mexico and more recently in Sicily. Originally published in 1995, this extensively revised edition reflects the considerable new knowledge that has been generated over the past 20 years.