Rosen was born in Cornwall. She studied psychology at Oxford before moving back to the West Country.
Readers have downloaded over a quarter of a million copies of Rosen's books. Several titles have broken into the Amazon charts, including a number 1 humorous fiction bestseller.
You can make chocolate at home, meaning that you can design and build your own perfect chocolate bar. In November, I'm going to release a book packed full of homemade-chocolate tips and recipes, but for now, I'll share the very first recipe from my book: Plain and Simple Dark Chocolate.