PREHEAT OVEN TO 160ºC . Heat cream, sugar and salt together. Place nuts, candied peel and flour in a food processor with the steel blade, and chop coarsely, turning the machine on and off. Stir this into hot ingredients and cook until the mixture thickens, about 2 minutes. Drop by teaspoons, 5 cm apart, on a well-greased cookie sheet. Bake for dozen minutes, until brown around the edges. Cool slightly on sheet. Remove and let cool until crisp.