The Patisserie Valerie gelaterias at Spitalfields in East London and Duke of York Square in Chelsea feature a flavour called banana blue. You can’t miss it, but you might want to give it a pass. As someone familiar with blue corn, berries and potatoes but not yet bananas I wanted to know what made the gelato blue before deciding for myself. I asked someone at Valerie, who inspected the package and identified the bluing ingredient as E133 – Brilliant Blue FCF. [Read more...]