In the '50s, the show was sponsored by Bosco, a chocolate syrup. Halfway through the show, Mr. Wizard always asked the kid he was working with, "What is nature's most perfect food?" and the kid was primed to say "Milk." Then Mr. Wizard could go on and praise Bosco for making it easy to make chocolate milk. But there was one time they didn't reckon with a wise kid with nerves of steel, who, when asked the question, responded loudly "Ovaltine!"
Debut: March 5, 1951.