mayo

Mayo, commonly mayonnaise, is a thick, pale yellow sauce made from oil, egg yolk, and an acid such as vinegar or lemon juice. It is an emulsion and is commonly seasoned with salt and mustard; variations may include garlic or herbs. It is widely used as a sandwich spread and as a base for many dressings and sauces. The origin and name are disputed. One theory links the sauce to Mahón, Menorca, while another points to a French or Spanish origin. Early recipes appear in the 18th and 19th centuries as emulsions, and mayonnaise became widely marketed in Europe and the Americas in the 19th century.

Mayo Clinic is a nonprofit American medical center and research organization known for patient care and medical education. With hospitals in Rochester, Minnesota; Scottsdale and Phoenix, Arizona; and Jacksonville, Florida, it emphasizes integrated care and research. Founded in 1889 by William Worrall Mayo and his sons, Mayo Clinic operates as a network of clinics, hospitals, and affiliated practices.

County Mayo is a county in the province of Connacht, Ireland. It sits in the western part of the country and borders several other counties. It features rugged coastline and landscapes, with Castlebar as its county town. The region is known for its cultural heritage and rural communities.

Mayo is also a surname and the name of places in various countries, including Mayo, Florida, United States. Etymologically and geographically, it can refer to people, locations, or institutions, depending on context.