Hass The Hass avocado is a large-sized fruit weighing 200 to 300 grams. When ripe, the skin becomes a dark purplish-black and yields to gentle pressure. When ready to serve, it becomes white-green in the middle part of the inner fruit.Owing to its taste, size, shelf-life, high growing yield and in some areas, year-round harvesting, the Hass cultivar is the most commercially popular avocado worldwide. Fuerte The Fuerte avocado is often recognized as the archetypal avocado, green in color, pear-like in shape, and ranging from six to twelve ounces in size. It has smooth, medium-thin skin that peels easily, with dense, pale green flesh. It is marginally oily with a rich, creamy flavor and notes of hazelnut, and it is still considered by many to be the best tasting avocado.