coated in chocolate and wrapped in gold foil.
Handed out to kids who knock your door doing trick or treat. They fall for it every time thinking they've got a handful of Ferero Rocher.
what I can't work out though is once I've done this my windows are covered in egg yolk the next morning
This. There's one particular pub called Poechenellekelder in Brussels I've been to a couple of times. Absolutely brilliant beer list. They won't serve you a beer unless they have the correct glass to match.