Lamb Hass Avocadoes are larger than the common hass variety. The pebbly skin is very dark green, even when under-ripe, and it will continue to darken to almost black as it matures. The skin of Lamb Hass Avocados can be easily peeled to reveal the pale green flesh, which houses a medium-sized seed. Like hass avocadoes, the flesh of the Lamb Hass is smooth and creamy, and offers a similar rich and nutty flavor.