This carpaccio is one of my favourite vegetarian alternatives at Christmas, when my in-laws eat oysters. I make it with goat's cheese, but it can also be made with camembert for variety. Visually superb, this dish offers a perfect balance between the sweetness of the honey, the melting of the hot cheese, the acidity of the vinaigrette and the crunch of the walnuts. A truly festive dish!