5 Ingredients is the latest book from Jamie Oliver.  He joined Today with Sean O’Rourke to discuss his career and latest culinary concept.

Jamie insists that this latest venture is the simplest cookbook he's ever made and each recipe focuses on just five ingredients with an addition of salt, pepper, oil, and vinegar in the cupboard.

"It’s kind of a massive master class in cooking-by-numbers, really"

The celebrity chef aims for the book to be modern and clean but full of comforts as well as some new treats.

"I think when I wrote this book, it’s sort of acknowledging that people are quite knowledgeable about food but maybe still nervous to cook."

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The father-of-five admits that his approach to people’s health and well-being has grown significantly throughout his career. He’s studying for a Masters in Nutrition at the moment.

"To learn the science of nutrition after I’ve spent 25 years cooking has been the most beautiful gift in the world"

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In terms of tackling obesity, particularly for school children has been a major part of Jamie’s career, and one which he continues to campaign for.

He has strong opinions on UK Prime Minister Theresa May’s efforts in that area.

"Out of the four Prime Ministers that I’ve been working with since School Dinners, thirteen years ago, she was the first to never want to talk to no-one."

"I've spoken to many of her ministers and they weren't consulted either so that was bad news but the good news is that her advisers, which I believe were the problem, have gone post the election and now the new guy, who is a kind of adviser seems to be - he has a great CV - seems to be having all the right conversations"

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Jamie is as forthright as always in his full chat with Sean O’Rourke, which you can listen back to above.