Our research has shown this one wasn’t entirely true, but close. 1935 Laws of Wisconsin, Chapter 106 required serving a small amount of cheese and butter with meals in restaurants (eff. June 1935 – March 1937).
101.07 Flushing devices for urinals. The department shall not promulgate any rules which either directly or indirectly prohibit the use of manual flushing devices for urinals. The department shall take steps to encourage the use of manual flushing devices for urinals. 101.07 – ANNOT. History: 1977 c. 418.
97.18(4) (4) The serving of colored oleomargarine or margarine at a public eating place as a substitute for table butter is prohibited unless it is ordered by the customer.