Popcorn is the latest high street food to take on the so-called ‘health halo’. The darling of wellbeing junkies and an Instagram sensation (4.8 million tags and counting), popcorn has transformed before our very eyes over the last few years. From a buttery-laden stinky ‘finger food’ from the cinema, it is now donned in salted caramel, doused salt and vinegar and packaged up in artisan boxes. If the humble kernel was a person it would be Laney Boggs from She’s All That. But what has popcorn had to undergo to let go of its calorific past life? And is the flavour still ‘all that’? Let’s get poppin’. It’s J ust Kernels and Air To find the healthiest popcorn, just look at the ingredients list on the back. Theoretically speaking, it should just be a kernel and hot air (which makes it ‘pop’). This alone is healthy. Why? Well, popcorn kernels are full of fibre, full of wholegrains, low in calories (a 30g portion provides only 120 calories) and is high in polyphenol antioxidants (a mic