Mayonnaise sauce is made as follows:--Break an egg and separate the yolk from the white, and place the yolk at the bottom of a large basin.

Next take a bottle of oil, which must be cool but bright; if the oil is cloudy, as it often is in cold weather, you cannot make the sauce.

Nor can you if the oil has been kept in a warm place.

Now proceed to let the oil drop, drop by drop, on the yolk of egg, and with a silver fork, or still better, a wooden one, beat the yolk of egg and oil quickly together.

Continue to drop the oil, taking care that only a few drops drop at a time, especially at starting, and continue to beat the mixture lightly and quickly.