The flavor of this golden brown fudge comes from the caramelized sugar. Combine 4 cups sugar and cream in a heavy 4-quart saucepan. Set aside. Melt 2 cups sugar in a heavy 10-inch skillet over medium heat. Stir sugar constantly until it begins to melt. Heat sugar-cream mixture over medium heat. Continue melting sugar in skillet, stirring and watching closely so it does not scorch. As soon as it is completely melted, por liquid sugar in a thin stream into boiling sugar-cream mixture, stirring constantly. Do not let sugar remain over heat after completely melted; this will produced a scorched taste. Cook com- bined mixtures to 246 degrees F. Remove from heat and add baking soda and butter. Stir in and let candy stand for 30 minutes. Add nuts. Stir to mix; pour into buttered 9-inch square pans. Cool slightly and cut into squares. Makes about 78 pieces.