Mozzarella is now also made predominantly from cow’s milk and is made all over Italy as well as in other countries, including the UK (where some producers are making mozzarella from water buffalo milk). Mozzarella is sold in rounds about the size of a small fist. Because it has no rind it’s packed in plastic bags, surrounded by water to keep it fresh. You’re more likely to find buffalo mozzarella from good delis or cheese shops and also look out for small mozzarella balls called ‘bocconcini’ which are sold in tubs.