The term “Mirabeau” is used to describe an elaborate garnish that often features a combination of anchovy fillets, tarragon leaves, and either olives or truffles. This garnish is commonly used in dishes such as sole Mirabeau, which is a culinary creation that features a fillet of sole topped with this flavorful and visually striking garnish. The complexity of the flavors in this garnish adds depth and richness to any dish, making it a popular choice among many culinary enthusiasts. The use of such garnishes is a testament to the artistry and creativity that goes into the preparation of fine cuisine.