From bubblegum-flavoured jelly beans to Haribo cola bottles, there are some tastes that will always remind people of their childhood, taking them right back to the good old days. 'Birthday cake' is emerging as another nostalgic flavour and sweet brands are reintroducing it.

Chewing gum used to be synonymous with youth in America. It was sexy, glamorous and epitomised a laid-back attitude. But the $4 billion US gum market is down 10% in sales, and this is expected to continue until 2019. So why are Americans spitting out their gum?

When Coca-Cola brought back '90s favourite Surge, it sold out online within hours. And it's not the only 'revival brand' that's been brought back due to nostalgic consumer demand. But what makes a brand re-issue a discontinued product? And what's driving Gen Y's nostalgia trip?

Gen Yers are often described as the most health-conscious generation, whether they're stripping gluten out of their diets or picking locally-farmed produce. But what happens when they become parents? Are Gen Y mums putting similar kinds of food in their kids' lunchboxes?