Jamie Oliver travels to Jeju island in South Korea, where he experiences first-hand the shellfish diving skills of women twice his age and, in the mountains of Switzerland, discovers how important the humble apple is to the Swiss diet. Back at home, Jamie cooks a day's worth of nutritious recipes inspired by his travels, featuring blueberry breakfast doughnuts, mineral-rich mussels invigorated with pesto, tomatoes and courgettes for lunch, and apples with pork meatballs for a perfect family meal.

Jamie goes fishing in Costa Rica and learns some karate in Japan. Also on the menu are cheese and corn pancakes, topped with smoky bacon and caramelised banana.

Jamie visits Sardinia and South Korea and cooks a toasted fruit crumble, squash and ricotta ravioli, and a vegetable tomato sauce

Jamie visits the Nicoyan Peninsula in Costa Rica, where living to 100 isn't unusual. He also travels to the Greek island of Ikaria. On the menu is berry pocket eggy bread with pistachios.

Jamie cooks a chicken hot pot with South Korean kimchi. There's pineapple pancake mess with coconut, cashew and lime for breakfast. And he shows how pasta can be the perfect base for vegetables.

Jamie Oliver meets some friendly cows in the Swiss Alps and cooks strawberry buckwheat pancakes, jumbo salmon fish fingers and a creamy risotto for dinner.

Jamie bakes colourful bread to go with spinach, cheese and eggs, and makes a spicy Balinese curry with shiitake mushrooms for dinner

In Japan, Jamie Oliver harvests and eats seaweed. On the menu is baked eggs and ricotta on toast, super tasty miso, and sizzling prawns with seasonal veg and salsa.

Jamie visits the mountains of Switzerland and the villages of Sardinia. He makes some chocolate porridge, super greens cannelloni and shepherd's pie with beans.

Jamie visits a Swiss chocolate factory and cooks salmon and magic egg for breakfast, sesame butterflied chicken for lunch, and a smoky veggie chilli for dinner.