Food Unwrapped jets off to find out the best foodie hacks, tips and tricks to help you feel great on your summer holiday. Jimmy Doherty discovers the truth about crash diets, reveals what it really means to stay fuller for longer and explores whether astronauts could hold the key to weight loss. Kate Quilton delves into the multi-million-pound collagen drinks market, and finds out how shots of the liquid claim to boost your skin's appearance. In Valencia, Matt Tebbutt checks out tiger nut milk, Spain's secret summer-friendly superfood. And Dr Helen Lawal investigates whether popping weight-loss pills can help summer slimmers.

What's the difference between white and dark rum? Are they made from different ingredients? Jimmy finds the answer in a Mauritius distillery. Back home, he learns where the term 'proof' originally came from: the answer's explosive, and it nearly blows Jimmy away! Jelly beans don't contain gelatine, so what is the jelly in a jelly bean? To find out, Kate visits the world's largest jelly bean producers, in California, at what may well be one of the world's most colourful factories. And fresh anchovies aren't salty, so why do tinned anchovies taste so salty? To find out, Matt goes on a remarkable night-time fishing trip off Italy's Amalfi Coast and visits an anchovy processing plant.