Zurich Salad Sauce.
The yolk of a fresh egg broken into a bowl; stir only one way; as you stir, add in drop by drор, 3 tablespoonfuls of fresh Lucca oil; 1 tablespoonful of tarragon vinegar flavoured with lemon juice, a little salt and pepper and mustard, if your British palate cannot be independent of it.
Add the salad, and turn it over from the bottom to the middle of the dish to get well mixed with the sauce.
“Travaillez bien votre salade.”