About 75% of the U.S. crop is the Hass variety, which has rough, nubby blackish-green skin and yellowish-green flesh. Fuerte avocados are oval with smooth green skins and pale green flesh that is a bit more watery than Hass. Both have a large pit in the center that detaches easily from the flesh. In addition to being the main ingredient in the popular Mexican dip, guacamole, avocados are delicious in sandwiches and salads. They are best served raw, as their texture and flavor do not hold up well to heat.