The Feria de la Alegría y el Olivo (“Alegria” and Olive Fair) has been an annual event since the 1970s in Santiago Tulyehualco. It is mostly based on a grain native to Mexico called amaranth. An “alegria” is a sweet made with this grain, honey with dried fruits and nuts sometimes added. However, the term is also used to refer to the plant that produces amaranth. An “olivo” is an olive tree. Amaranth was an important part of the pre-Hispanic diet, due to its nutritive qualities and its use in various ceremonies. This annual fair is dedicated to elaboration of this sweet along with olive products from the area. Over 250 producers of the grain offer their products in various preparations. There are also cultural events such as concerts.