Did you know that botanically the avocado is considered a fruit and ounce for ounce one of the healthiest foods around? They are rich in heart healthy monounsaturated fat and also contain large amounts of potassium, vitamin E, fiber, folic acid and vitamin B6. There are over 24 varieties of avocados, although the most common ones you'll see are the Hass (with the pebbly black skin) and Fuerte (green skin). Both varieties are grown in California and Florida. Their peak season is in spring and summer. An avocado is considered ripe when it yields to gentle pressure without denting. If it dents then it is overripe. If you have purchased one and needs to be ripened you can leave it out on the counter top for a few days or you can place it in a paper bag with either an apple or banana to accelerate the process.