A good chocolate mousse is a must in any pudding repertoire, and I guarantee that, once you’ve made this one, you’ll be going back for more. Over the festive season, I think it’s fun to be lavish and go all out to impress, so grab that trifle bowl in the back of your cupboard or pick up a secondhand glass pudding bowl at a local charity shop – there always seems to be one lurking at the back.