According to the canon, chocolate is sold in Kyorl's district. It is common for religious zealots finance themselves by means of drug trade, after all.
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Why Kyorls have monopoly of chocolate? Why the mercantile clans tolerate it, or do they try to cut into their chocolate business?
Where the cocoa beans come from? Cocoa is tropical plant - is there secret Kyorl colony hidden in jungle growing the beans, or are they produced by goblins and traded long way from one goblin to another before they get to Chel?