Persea americana
 
The Sir Prize avocado is a large, early-ripening Mexican hybrid known for its rich, nutty, buttery flesh, small seed, and high flesh-to-seed ratio, resembling a creamy Hass , Its skin is glossy dark green, turning to a deep aubergine/black when ripe, and it has a distinctive ridge that softens with ripening. The flesh is smooth, pale yellow, and resists browning after cutting. highly sought after for its large fruit and small seed size, as they have the most flesh-to-seed ratio of any commercial avocado.