Possible Clues:

• That's a run in music from the kitchen
• Run, seeing youth stabbing debauchee
• Dish; florid musical passage
• Our 1ac boy Earl's on a roll
• Posh youngster tucking into eggs and roll
• Regret pig fat is said to be in this dish
• About to cross where French boy gets a Swiss roll, say
• Upper-class boy tucking into eggs and Swiss roll, for example
• Boy caught by wolf, one's stuffed
• Having hand in decadent fancy dish