Cigarette sales surged again with the introduction of the "White Burley" tobacco leaf and the invention of the first practical cigarette-making machine, sponsored by tobacco baron James Buchanan "Buck" Duke, in the late 1880s.

CNN: A brief history of tobacco

In 2010, Leicester City Council began a campaign to stop paan, a tobacco-leaf mixture, being spat out on the streets.

BBC: Leicester City Council wardens to fine street spitters

Rice, barley, dairy products, and leaf tobacco farming operates under high tariff and non-tariff barrier protection.

FORBES: WTO Critique Of Japanese Agriculture

The rare leaf is a part of the tobacco plant called the medio tiempo, taken from the upper leaves of the plant, but which not every plant produces, making it rare.

CNN: STORY HIGHLIGHTS

Paan, a mixture of tobacco, nuts and spices, is wrapped in a leaf and mainly chewed by members of the Asian community.

BBC: Leicester City Council wardens to fine street spitters