In "Gulp: Adventures on the Alimentary Canal," author Mary Roach discusses the challenge of getting cats to eat vegetables. Many cats are finicky eaters, often showing resistance to anything that's not meat. Roach introduces the concept of using pyrophosphates to appeal to feline palates. This compound, described as "cat crack," can make kibble more enticing, helping to mask the lack of flavor in less appealing ingredients like vegetables.

Pet food manufacturers can take advantage of pyrophosphates by coating kibble with it to enhance its taste. This strategy allows them to address various deficiencies in flavor while encouraging cats to consume a more balanced diet that includes vegetables. Roach's insight highlights the complexities of pet nutrition and the clever methods used to entice picky eaters, ensuring they get their necessary nutrients.