The lesson also trades on the popularity of the Junior MasterChef television show, which also helped curry favour for the lessons among pupils, Mr Preston said.
"It makes it all interesting and entertaining, especially with shows like MasterChef being very popular right now for kids this age."
Mr Fortune said he will also hold classes at Kahutara School tomorrow in a successful programme that had already helped "tens of thousands of children to eat healthy, easy to prepare, sustainable foods that have been made in front of them, from their own school gardens or local community".
"Everybody gets to try, and taste, the cooking we do and there are lots of magic moments. Give a child breakfast and they will eat for a day, teach them how to cook and they will eat for a lifetime."