There are two types of Lemon Oil used for food. The first is not actually a Lemon Oil; it is instead Olive Oil infused with Lemon. See entry on Colonna Oils for one example of this. The second is a very strong essence of Lemon, stronger than Lemon Extract, which is cold pressed from lemon…
Oil
Marseille Butter
This is an in-joke amongst cooks: it’s oil. Butter isn’t used in Marseille very much; oil is used instead.
Olive Juice
The phrase “olive juice” is a misnomer. Occasionally you will see it used to refer to the brine of preserved olives, when called for in a mixed cocktail such as a dirty martini. You can actually buy it now in jars for bar use. It comes without the actual olives in it. Elsewhere, the phrase…