The method, that features minced beef, dry white wine and nutmeg, is reportedly one of 120 recipes by celebrities and chefs in the upcoming book, A Taste of Home.
"I am the first to admit that I am not an excellent chef," William reportedly writes in the book. "The last time I was allowed into the kitchens at The Passage I made a spaghetti Bolognese."
Kate Middleton opened up about William’s bolognese last year, telling Mary Berry during their TV special, A Berry Royal Christmas: "In university days he used to cook all sorts of meals. Bolognese and things like that. I think that’s when he was trying to impress me, Mary!"
William has also spoken about his cooking for his then-girlfriend.
"When I was trying to impress Kate, I was trying to cook these amazing, fancy dinners and all that would happen was that I would burn something, something would over spill, something would catch on fire. And she’d be sitting in the background just trying to help and basically taking control of the whole situation. So I was quite glad she was there at the time."
This article originally appeared on marie claire UK.