If ‘chocolate factory’ conjures up images of Wonka’s waterfall then you aren’t far off the truth – the pouring and whirling of chocolate is a key part of the process. I discovered this recently, when I was lucky to visit the Mast Brothers testing room and factory in Williamsburg, Brooklyn.

In a recent wander around Williamsburg on a chilly afternoon Maxie and I were lured in by the neon lights, warmth and promise of interesting beverages at David Chang's Milk Bar.