Mayonnaise

No one seems to be quite sure where this cold sauce comes from, but it may be a modern example of the medieval mixing of eggs and verjuice (the sour juice of crab apples or unripe grapes). It’s more likely that it is from the Minorcan town of Mahon, which was said to have very good eggs. Whatever, mayonnaise is useful in any number of ways – in potato salad, as a base for other sauces, in sandwiches and many more.