Meghan Markle Isn’t Alone: How the Super-Rich Fell in Love With Jam-Making

Lord Anthony Ardee could tell Meghan Markle a thing or two about the fine art of making—and marketing—posh jam. Anthony is the 15th generation of his family to manage their estate, Kilruddery House near Dublin, Ireland, which boasts a thriving farm shop in the grounds of the house’s magnificent gardens, laid out in the 17th Century, which has been selling jam and other preserves for several years.

He told The Daily Beast: “Jam is not new, and we began making it for...