There is also a number of fairs dedicated to local products. The Feria del Nopal (Nopal Cactus Fair) in San Bernardino Tlaxcalanzingo celebrates the main crop grown in the municipality. It occurs during the first week of June. The Feria del Queso (Cheese Fair) is held in Santa Maria Tonantzintla and is held in honor of the Virgin of the Conception. There is an exposition and sale of local cheeses at the main plaza of the municipality on the first weekend of August. There is also an annual festival dedicated to bread in which an enormous brick oven is constructed on the main plaza and local bread makers demonstrate traditional techniques. Over 150 types of bread are exhibited and sold during the event.