Tempted by edinburghs array of chocolatiers and confectioners but dont know where to start head out on a 25 hour chocolate walking tour of the city and savor seven sugary samples in some of the citys finest dessert boutiques with a local guide scout out the best chocolate cakes candy cupcakes and more in venues such as the fudge kitchen hotel chocolat harvey nichols and lickety splits a candy shop that would make willy wonka proud