[ noun ] eggs and butter with lemon juice <noun.food>
Hollandaise sauce \Hol`lan*daise" sauce\, or Hollandaise \Hol`lan*daise"\, n. [F. hollandaise, fem. of hollandais Dutch.] (Cookery) A sauce consisting essentially of a seasoned emulsion of butter and yolk of eggs with a little lemon juice or vinegar. [Webster 1913 Suppl.]
Moreover, a batch of hollandaise had been prepared ahead of time that Sunday and, although it initially was stored in the refrigerator, it later was left sitting on a table under a skylight.
In contrast, eggs often are eaten raw _ in hollandaise sauces, Caesar salad dressings, homemade egg nog and ice cream, the researchers said.