The Hass avocado is a cultivar of avocado (Persea Americana) with dark green colored, bumpy skin. ... 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. The Hass avocado is known for its quintessentially tumbled leathery fairly thick skin that turns near black when fully ripe. The flesh closest to the skin is a lush pale lime green color and as it nears the central pit it develops a rich creamy yellow tone and softer, oil rich texture. Hass avocado's flavor reflects its texture - creamy and smooth with a nutty and sweet finish.