Melt butter; add sugar, milk, molasses, and chocolate. Heat gently and stir until chocolate is melted. Bring to the boiling point and boil to soft ball stage (234 238 F). Remove from fire. Cool to room temperature. Beat until creamy. Add raisins, nuts, and flavoring. Continue beating until mixture will hold its shape. Pour into well-buttered pan. Cut in squares. Mrs. H.J.T., Tulsa, OK.