All photographs were taken by Ben-Erik van Wyk except for those listed below.
Allium chinensis bulbs (Jan-Adriaan Viljoen); Allium ursinum flowers (Thomas Brendler); Boesenbergia rotunda roots [Marshall Cavendish International (Asia) Pte Ltd, Singapore]; Cocos nucifera green fruits (Eben van Wyk); Eryngium foetidum leaves (Shutterstock); Ferula foetida (Michael Pimenov, Moscow State University); Origanum syriacum (Prof K. Hüsnü Can Baser, Anadolu University, Turkey and Mr A. Haluk Turker, Eastern Mediterranean Forestry Institute, Tarsus, Turkey); Houttuynia cordata (Wikimedia commons); Humulus lupulus female cones and dried cones (Shutterstock); Pimenta racemosa (Thomas Brendler); Piper cubeba (Shutterstock); Rhus coriaria (Mr A. Haluk Turker, Eastern Mediterranean Forestry Institute, Tarsus, Turkey); Vanilla planifolia flower (Joreth Duvenhage, Du Roi Nursery); Wasabia japonica (Pacific Coast Wasabi Ltd, Vancouver, Canada) Wasabia japonica stems (Shutterstock); coffee beans (p. 8), Chinese noodles (p. 13), spices (p. 15), satay (p. 17), tom yam soup ingredients (p. 17), Mexican food (p. 19) (all Shutterstock); Spice market (p. 19) (Marten Feiter, Parceval, Wellington).