This native American nut is a member of the hickory family. It has a fat content of over 70 percent...more than any other nut. Pecan trees prefer temperate climates and are widely grown in Georgia, Oklahoma and Texas, and as far north as Virginia. The nut's smooth, tan shell averages about 1 inch in length and, though hard, is relatively thin. The buttery-rich kernel is golden-brown on the outside and beige inside. Chopped or halved shelled pecans are available year-round in cellophane packages, cans and jars. Though unshelled pecans are also available throughout the year, their peak season is during the autumn months.