Mangú is a traditional dish that consists primarily of mashed plantains. It is a staple breakfast food in the Dominican Republic but can also be served at other meals.

The preparation of mangú is quite simple: green plantains are peeled, cut into chunks, and boiled until they are soft. After boiling, the plantains are mashed with some of the water they were boiled in, along with butter, oil, or margarine to create a smooth, creamy consistency.

Mangú is typically served with red onions that have been sautéed in vinegar, which adds a tangy flavor contrast. It is often accompanied by other side dishes such as fried cheese, eggs, or salami, making it a hearty and filling meal.

This combination of foods is sometimes referred to as "los tres golpes" or "the three hits," referring to the three most common sides served with mangú.