Mix ingredients. In a large mixing bowl, add all the pudding ingredients – 1 cup of raisins, 1 cup of golden raisins (sultanas), 1 cup of self-rising flour, 1 cup of breadcrumbs, 1 cup of light brown sugar, 1 cup of frozen and grated butter, 2 teaspoons of mixed spice, 1 cup of whole milk, and 1 large, room temperature egg.