The berry of an evergreen tree, allspice tastes like a combination of cinnamon, nutmeg and cloves. It is a particular favorite with holiday bakers, who like to add its bold flavor to cookies, cakes and pies. Allspice can be used ground or whole. Buy allspice, especially ground allspice, in the smallest amount you can from a store with high turnover, as the spice will begin to lose its flavor after 6 months. If possible, purchase allspice in bulk, buying only a little at a time. If you buy a can or jar, be sure to check it for a date to ensure freshness.