626. Tartar Sauce.—Rub the yolk of a cold hard-boiled egg through a hair sieve into a basin, to which add the yolks of two raw eggs, with a little salt and pepper; mix all together with a wooden spoon; have a pint of good salad oil in a bottle, hold it with the left hand over the basin, dropping it in very gradually, and with the right continue stirring it round until it becomes rather thick, then moisten it with a little tarragon vinegar, still keeping it stirred, then more oil, and so on until you have used all the oil, keeping it rather thick; then add a tablespoonful of finely chopped gherkins, half a ditto of chopped capers, half a ditto of chopped eschalots, and the same of chopped parsley, two of French mustard, a little cayenne pepper, sugar, and more salt if required; it is then ready for use. This sauce requires to be rather highly seasoned. Common vinegar may be used.