Food is a political act. So thinks Cyd Szymanski, owner of the White Dog Café. She is quite right. The ethics of food are under discussion in Eating, which attempts to put a moral and political background to the food we eat. There are three main strands to an ethical analysis of any product or group of products - how the product affects animal welfare, how it affects human rights and how it affects the environment. Peter Singer and Jim Mason address these issues working backwards from plate to source. As they explore the plight of the factory-farmed animal, the poverty endured by many food workers and the horrifying degradation caused to an increasingly fragile environment, it makes for some difficult reading.