The "secret recipe for killing" comes from the Hong Kong movie "Double Food". Although there are many artistic exaggerations in the film, the film also reminds the audience to pay attention to the compatibility of food and avoid unconsciously hurting themselves and their families in the food. The hero played by Wu Zhenyu ate the food cooked by his lover and lover according to the "killing recipe" and died of poisoning. According to the plot, the food itself is non-toxic, but when put together, it has the function of restraining each other and is toxic to the human body. Relevant professional doctors also pointed out that several recipes are really similar, but the expressive force in the film is too exaggerated. Under normal circumstances, if you don't eat much, you can avoid poisoning by grasping the interval between two meals.