The Marshmallowists, Portobello Road
A day at the markets calls for some serious snacking, and we've got to give props to this crew for ingenuity. Working from a pop-up shop outside 171 Portobello Road, The Marshmallowists peddle fat slabs of gelato-hued marshmallows boasting flavour combinations like raspberry and champagne, blueberry and gin, and blackcurrant and mint. Go online if you want details about ordering a box for friends or (let's be honest) yourself.