For a simple one that calls only for the other powerful ingredients in your cupboard, combine equal quantities of drained chopped capers, pitted chopped olives, a chopped anchovy fillet or two (or five, depending on your taste), and twice as many finely chopped cornichons as capers and olives. Mix with just enough olive oil to loosen. Try this on cold potatoes, or cold roast chicken, or in an omelet of boiled beef.
