Celebrity chef Jamie Oliver has come under fire as readers claim his 30-minute meals bestseller take more than an hour to make. The 35-year-old's latest cookbook Jamie's 30-Minute Meals has become Britain's fastest selling non-fiction book of all time, but it has left a fair few fans feeling angry. Some people who spent £26 on the book hoping to cut down on time spent in the kitchen claim it is nearly impossible to make any of the dishes in under an hour. And even experienced cooks have complained online that the meals took up to an hour and a half to make. Some of the complainers included a group of cooks with the username 'unsatisfied', who wrote on Jamie's official forum: "Jamie, your 30 minute meals are more like 90 minute meals! Even with three people cooking them they still CANNOT be done in thirty minutes."