Clad in a top hat, sweater and bow tie, shuffling through his Mouse dance, he reached his slapstick heyday in the mid-1960s on “The Soupy Sales Show,” a widely syndicated program based at WNEW-TV in New York.

Image Soupy Sales rehearsing for his Broadway debut in "Come Live With Me" in 1966. Credit... Associated Press

Some 20,000 pies were hurled at Soupy Sales or at visitors to his TV shows in the 1950s and ’60s, by his own count. The victims included Frank Sinatra, Tony Curtis and Jerry Lewis, all of whom turned up just for the honor of being creamed.

His memoir “Soupy Sez!” (M. Evans, 2001), written with Charles Salzberg, supplied the precise ingredients for successful pie-throwing: “You can use whipped cream, egg whites or shaving cream, but shaving cream is much better because it doesn’t spoil. And no tin plates. The secret is you just can’t push it and shove it in somebody’s face. It has to be done with a pie that has a lot of crust so that it breaks up into a thousand pieces when it hits you.”

But the key to his comedy went beyond the smashing of a pie.

“Our shows were not actually written, but they were precisely thought out,” he explained in his memoir. “But the greatest thing about the show, and I think the reason for its success, was that it seemed undisciplined. The more you can make a performance seem spontaneous, the better an entertainer you are.”

For all the staged mayhem, the truly unpredictable did occur. “I remember one time we were working with Pookie at the window,” Mr. Sales recalled. “He was doing a bit where he was breaking eggs and one of the eggs turned out to be rotten. My God, the smell was terrible! And I’m sure, watching us at home, everyone knew there was something wrong from the look on our faces.”