Genovese Sauce Recipe (Salsa genovese)

Chop fine a sprig of parsley and half a clove of garlic. Then mix with some capers soaked in vinegar, one anchovy, one hard yolk of egg, three pitless olives, a crumb of bread as big as an egg, soaked in vinegar. Grind all these ingredients, rub through a sieve and dissolve in olive oil, dosing right by tasting.