Dave's World had us baffled with this one

With Starbucks selling approximately 4 billion cups of coffee annually, you would think that coffee beans made up the biggest part of their spending. But they don't.

Dermot and Dave discuss the chain's expenditure whilst also learning about the world's oldest tree, ancient seeds and Aerosmith's Steve Tyler losing his marbles.

Check out the facts and fun in full by pressing the play button on screen.