The rule would be this- Whatever he saw, if it was runny or powdery or gooey, in it went.
Roald Dahl (Author) Roald Dahl was a spy, ace fighter pilot, chocolate historian and medical inventor. He was also the author of Matilda, Charlie and the Chocolate Factory, The BFG and many more brilliant stories. He remains THE WORLD'S NUMBER ONE STORYTELLER. Quentin Blake (Illustrator) Quentin Blake has illustrated more than three hundred books and was Roald Dahl's favourite illustrator. In 1980 he won the prestigious Kate Greenaway Medal. In 1999 he became the first ever Children's Laureate and in 2013 he was knighted for services to illustration.