1. The too rapid addition of the oil at the start.
2. The use of congealed, or too cold, an oil.
3. Excess of oil in proportion to the number of yolks, the assimilating power of an egg being limited to two and one-half oz. of oil (if the sauce be made some time in advance), and three oz. if it is to be used immediately.
Means of Bringing Turned Mayonnaise Back to its Normal State.—Put the yolk of an egg into a basin with a few drops of vinegar, and mix the turned Mayonnaise in it, little by little. If it be a matter of only a small quantity of Mayonnaise, one-half a coffeespoonful of mustard can take the place of the egg-yolk. Finally, with regard to acid seasoning, a whiter sauce is obtained by the use of lemon juice instead of vinegar.
[127—CLEARED MAYONNAISE SAUCE]
Take the necessary quantity of Mayonnaise and gradually add to it, per one and one-half pints of the sauce, one-half pint of cold and rather firm melting aspic jelly—Lenten or ordinary, according to the nature of the products for which the sauce is intended.
Remarks.—It is this very Mayonnaise, formerly used almost exclusively for coating entrées and cold relevées of fish, filleted fish, escalopes of common and spiny-lobster, &c., which I have allowed the Lenten Chaud-froid (see remarks No. [76]) to supersede.
[128—WHISKED MAYONNAISE]
Put into a copper basin or other bowl three-quarters pint of melted jelly, two-thirds pint of Mayonnaise, one tablespoonful of tarragon vinegar, and as much rasped or finely-chopped horse-radish. Mix up the whole, place the utensil on ice, and whisk gently until the contents get very frothy. Stop whisking as soon as the sauce begins to solidify, for it must remain almost fluid so as to enable it to mix with the products for which it is intended.
This sauce is used principally for vegetable salads.