Hi, I have been looking at the Persian Lamb Stew recipe on Nigella's website and wondered what is "evo", mentioned in the ingredients list?
EVO, or EVOO is an acronym for extra virgin olive oil - it is used sometimes as shorthand to save typing out the words in full. The term is particularly used by the American TV chef Rachael Ray. Extra virgin olive oil comes from the first pressing of the olives and has no more than 0.8% oleic acid.
Usually extra virgin olive oil will be used for salad dressings or for dipping or drizzling as it is expensive and has a better taste than regular olive oil. It can be used for cooking, as it is in the Persiabn Lamb Stew recipe, though we feel that regular olive oilis fine for casseroles and stews as the longer cooking time will mean that the subtle flavours of the extra virgin oil will be lost.