Pink Marc de Champagne Truffles Lightly dusted pink coloured truffles with a milk chocolate butter and Marc de Champagne centre. Charbonnel et Walker has been established as Britain's Master Chocolatiers since 1875. In that year, King Edward VII (then Prince of Wales) encouraged Mme. Charbonnel to leave the chocolate house of Maison Boisser in Paris to join Mrs Walker to establish a chocolatier and confectionary house in London's Bond Street.