"I suggest you make a start on these sweets. Ah! Bettie Bott's Every Flavor Beans! I was unfortunate enough in my youth to come across a vomitflavored one, and since then I'm afraid I've rather lost my liking for them -- but I think I'll be safe with a nice toffee, don't you?"
He smiled and popped the golden-brown bean into his mouth. Then he choked and said, "Alas! Ear wax!"
Dumbledore to Harry

Harry Potter and the Philosopher's Stone - Chapter 17 : The Man with Two Faces
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