It’s Easter so it has to be chocolate. Pierre Hermé is possibly the king of Paris chocolate.His Japanese laquer box of a patisserie in the heart of Saint Germain just off the place Saint Sulpice is as sophisticated as pastry shops get, even in pastry-addicted Paris. Pierre Hermé is so serious about his work that, like the couture houses, he produces his cakes in seasonal collections. Buy a patisserie and it will be placed like a designer hat in a transparent box. Flavours are sophisticated, multilayered and muti-textured: his chocolate mousse, cased in a brittle shell of fragile bitter chocolate, is laced with sea salt and contains a hidden crunch. The only thing that could possibly improve PH would be somewhere you can sit down and eat your pastry (because you’ll want to, right away). Thankfully, the Café de la Mairie round the corner on Place Saint Sulpice will turn a blind eye to your surreptitious cake-scoffing if you order a tea or coffee in their upstairs room.