You know the feeling. Head's pounding and anxiety is setting in. Can't decide, can't concentrate. Then you catch the aroma.
Satisfaction is close.
With that first mouthful, you know you can take on the day. A strong cup of coffee. Few of us would admit it, but we're actually drawn to it by a drug called caffeine. Wild coffee trees survive in the forests of equatorial Africa but as a crop it has become the world's most valuable traded commodity, after oil. The reason for its popularity is quite simply the caffeine it contains.