Milk is largely taken for granted as a food source in many societies. However, the fact that milk is considered such a normal and staple part of many diets obscures various questions that we might have about what ‘milk’ actually is, and what the ethical implications are of making milk a central part of human diets.   In this podcast, Distinguished Professor Wendy Rogers and guest Dr Annie Sandrussi investigate ways of thinking about the nature and production of milk, and unpack claims about sustainability related to the ethics of milk consumption.   This podcast features Annie’s recently accepted paper “Ontology and the Ethics of Milk: A Relational Materialist Approach”, published today in Food Ethics.