If you look at the bestselling books of 2025 on Amazon, you might be surprised to see a cookbook in second place. Jamie Oliver's Easy Air Fryer is second only to Onyx Storm (a popular fantasy novel).

The 69-year-old took over the Italian firm in 1997 after its founder and her brother Gianni was murdered. Since then, she has become a fashion icon, shaping the brand's modern identity and ...