Stendhal's Scarlet and Black has a curious passage where the main character observes that even the eating of a boiled egg "reveals the progress one has made in the godly life"
To support this it refers to what is presumably a real historical event:
The reader, who is perhaps smiling, will please to remember all the mistakes made, in eating an egg, by the abbè Delille when invited to luncheon by a great lady of the Court of Louis XVI. (p208 of Everyman Library edition)
I assume Delille here is Jacques Delille, who lived about this time and was at one time an abbot.
Anyone able to dig up reference to this egg-eating encounter and scandal?