An ad in the Chicago Tribune
for Carl Buddig Smoked Sliced Beef not only depicted beef, but smelled like it too. This was achieved by mixing "a 12 per cent concentrate of oil of cassia, oil of clove, and maple syrup — ingredients used in the beef curing process" with the printer's ink. Although the ad ran on April 1st, the Tribune
insisted there was "No fooling." It was a real smoked beef smell.