The term 'Bartlett Alternative' refers to two different types of pears. The first is the BOSC pear, which is a type of pear with a long neck and a golden-brown color. It has a sweet flavor and a crunchy texture. The second is the BoscPear, which is a hybrid of the Bartlett and BOSC pears. It has a yellow-green color and a sweet, juicy flavor. Both types of pears are popular in cooking and baking, and can be used in a variety of dishes.