Gertjan has been a butcher all his life. He took up the role of Gertjan, head catering butcher and meat specialist at G&B Fish and Meat Yerseke. Alongside that, he teaches classes on leading chef training courses and makes meat videos for FoodTube and YouTube. He wrote the book 'The Meat Bible' and 'Nose to Tail' of which more than 25,000 copies have been sold. He also writes columns and recipes for Meat Magazine, Fire and Food and Foodies magazine. Gertjan is also known from TV where he has worked on several different programmes. In his limited spare time, he participates in KCBS BBQ competitions throughout Europe.