It was one lunch time sitting around the table that my husband started talking about values and that we don’t always do what we say we do, even though we really try to. He went on to talk about the parmesan, that my daughter was generously grating over her garlicky tomato spaghetti. He said ‘for example, take parmesan, we are vegetarian but is it vegetarian?’One of my daughters got up and looked at the plastic packet that it came in.‘Mum, what is rennet?’ she asked. I knew it was not