Defne knew her best friend Yağmur should not consume sugar; she was diagnosed with cancer and sugar was not allowed in her diet.
Knowing her best friend has a sweet tooth, Defne decided to go into her kitchen and wrote her book "I'm Sweet Actually" which was full of dessert recipes that were healthy and did not contain any sugar or substitutes.
After the release of her book, Defne now organises workshops with children and cooks with them to show that healthy foods can be delicious.