A piece of cake never tastes better than when you've earned it and are only replacing calories already burned off back up the road.
And coffee, of course, contains one of the few performance-enhancing drugs it's perfectly legal to take: caffeine...
Paul Fournel wrote in his book ‘Need for the Bike’, “You have to know how to look good when you’re riding. You have to impress your adversary with your elegance. To look good is already to go fast.”