Hansel and Gretel is always a tricky one to place for an audience. Whilst generally considered a children's fairytale, this originally gruesome tale of cruelty and parental neglect isn't in any way fluffy.The opera, originally devised in German by Adelheid Wette and Engelbert Humperdinck, softens it somewhat by revisiting some of the more unforgiving elements, and paired with Peter McKintosh's colourful set at the Regent's Park Open Air Theatre, this English adaptation has a broader appeal....