Pecans have a sweet, nutty, buttery flavor, and can be eaten fresh, roasted, and used in all kinds of recipes, particularly desserts. Pecans are an American classic and one of the quintessential sweet-savory concoctions in the culinary arts. Pecans and Walnuts are sometimes confused for one another. Pecans are generally sweeter and a bit more delicate than Walnuts. Pecan kernels are smoother and straighter in their structure while Walnuts have a more curly structure.