(Bloomberg) -- Cocoa headed for the biggest monthly advance in more than two decades in New York on the back of mounting supply fears that threaten to push prices of the key chocolate ingredient even higher.Most Read from BloombergHow Much Wealth You Need to Join the Richest 1% Around the WorldApple to Wind Down Electric Car Effort After Decadelong OdysseyFed’s Preferred Inflation Metric Increases by Most in a YearBonds Climb After ‘No New Bad News’ on Inflation: Markets WrapSingapore’s Richest