Wonka looked alarmed. "You didn't give her a recipe?"

: That iconic chocolate river? It was made of 150,000 gallons of water mixed with real chocolate and cream—which reportedly began to smell terrible by the end of filming. Pure Imagination & Controversy

Seltzer added numerous classical literature quotes spoken by Wonka, ranging from Shakespeare to Arthur O'Shaughnessy's "We are the music makers, and we are the dreamers of dreams."

They walked together down the corridor toward the Chocolate Room. Below them, the river of chocolate flowed with the same mesmerizing thickness. The Oompa Loompas were busy harvesting giant marshmallow pumpkins, their rhythmic drumming echoing off the edible grass.

Wonka’s expression softened. He looked at Charlie with immense pride. "You turned her away."

The Subversion of Industrial Innocence: Morality, Exploitation, and the Grotesque in Willy Wonka & the Chocolate Factory (1971)

: Director Mel Stuart kept the "Chocolate Room" set a secret from the child actors until the cameras were rolling, ensuring their wide-eyed wonder at the chocolate river and candy trees was 100% real.