Most heists target gold, jewels or cash. This one targeted illegal seeds. As the British established their sprawling empire across the subcontinent and beyond, they encountered a formidable adversary — malaria.  There was a cure — the bark of the Andean cinchona tree. The only problem? The Dutch and the French were also looking to corner the market in cinchona. And the trees themselves were under threat. Grab a gin and tonic and come with us to hear how a botanical empire took off — and gave birth to a quintessential cocktail.