Wonka Bars are the signature chocolate of the movies based on Willy Wonka. Find out why these chocolate bars are not available for fans to buy today.. In a delicious instance of art imitating life, it turns out that Cadbury is the real chocolate factory behind Roald Dahl's Willy Wonka books.
But no real factory has an open flowing river of chocolate like the one in the story. Interestingly, when the 1971 film Willy Wonka & the Chocolate Factory was made, the filmmakers actually created a real chocolate mixture for the river scene.. Willy Wonka & the Chocolate Factory is a 1971 American musical fantasy film directed by Mel Stuart from a screenplay by Roald Dahl, based on Dahl's 1964 novel Charlie and the Chocolate Factory. It stars Gene Wilder as chocolatier Willy Wonka.