Cocoa prices have soared. Will chocolate bars change in taste or size?

Though cocoa prices on the financial markets have soared, the rise is benefiting cocoa growers, bean processors, speculators and chocolatiers in unequal measure.In March, prices rocketed to more than $10,000 a tonne in New York after a poor harvest in West Africa due to a combination of bad weather conditions and disease devastating ageing plantations.They...