The problem is, for one, a supply issue. Dry weather in West Africa (specifically in the Ivory Coast and Ghana, where more than 70 per cent of the world's cocoa is produced) has greatly decreased production in the region.
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A nasty fungal disease known as frosty pod hasn't helped either. The International Cocoa Organization estimates it has wiped out between 30 per cent and 40 per cent of global cocoa production.
Because of all this, cocoa farming has proven a particularly tough business, and many farmers have shifted to more profitable crops, like corn, as a result.
Insatiable appetite
Then there's the world's insatiable appetite for chocolate. China's growing love for the stuff is of particular concern. The Chinese are buying more and more chocolate each year. Still, they only consume per capita about 5 per cent of what the average Western European eats. There's also the rising popularity of dark chocolate, which contains a good deal more cocoa by volume than traditional chocolate bars (the average chocolate bar contains about 10 per cent, while dark chocolate often contains upwards of 70 per cent).
For these reasons, cocoa prices have climbed by more than 60 per cent since 2012, when people started eating more chocolate than the world could produce. And chocolate makers have, in turn, been forced to adjust by raising the price of their bars. Hershey's was the first, but others have followed suit.
Innovation
Efforts to counter the growing imbalance between the amount of chocolate the world wants and the amount farmers can produce has inspired a bit of much needed innovation.
Specifically, an agricultural research group in Central Africa is developing trees that can produce up to seven times as many beans as traditional cocoa trees can. The uptick in efficiency, however, might be compromising taste, says Bloomberg's Mark Schatzker. He likens the trade-off to other mass-produced commodities.
Efforts are under way to make chocolate cheap and abundant - in the process inadvertently rendering it as tasteless as today's store-bought tomatoes, yet another food, along with chicken and strawberries, that went from flavourful to forgettable on the road to plenitude.
It's unclear if anyone will mind a milder flavour if it keeps prices down. And the industry certainly won't mind, so long as it keeps the potential for a gargantuan shortage at bay.