I was going to say cocoa as a hot drink, but a co-linguist has got to it first. Cocoa is good and chocolaty at any hour, hot or cold, but don't mix it with your soup or you'll find it has put an odd flavour in your cup or mug, and your mouth!

A truly famous lipogrammatic roman of not that long ago is La disparition, by a Frank, mayhap a Parisian, with initials G.P., and put into good old Anglo-Saxon by a Mr G. Adair as A Void. An amusing story though it can flag if you go on too long with it.