Rachel Khoo on the rise of ramen - and why you must slurp

If you have spotted excessively long queues in central London lately, you might have noticed a serious new food trend in the making. We’ve all gone mad for ramen, in all its rich, soothing, comforting deliciousness. To get to the bottom of this foodie phenomenon, I decided to head to Japan, a gastronomic haven for any self-respecting gourmand.