Cookstrip home as a weekly feature in The Observer. The first cookstrip, "Cooking Beef: Part 1", appeared in The Observer on March 18, 1962 eight months before the release of Deighton's debut novel, The IPCRESS File. The "Len Deighton's Action Cookbook" which expanded these cookstrips into a full-length book was published March 1965, timed to coincide with the release of the film of "The Ipcress File" starring Michael Caine. Deighton chose the menu for the movie's press lunch and everyone was presented with a copy of the book. In the movie, Caine's character, Harry Palmer, is seen cracking eggs with one
The IPCRESS File his attempt to sell information to the protagonist had been a test of his loyalty, which the protagonist had passed by rejecting it. The novel ends with the protagonist concluding his report to the Minister, revealing that Jay has turned and began working for the British, while Dalby has been executed and his death covered up as a car accident. In 1992 Deighton said that the inspiration to write the novel came from his real-life neighbour Anna Wolkoff, a White Russian émigré who collaborated with a cipher clerk from the American embassy to spy for Germany in World War II.