Queso Fundido "melted cheese" is a delicious Mexican appetizer made with crumbled chorizo, melted cheese, jalapenos, and a variety of toppings. This cheesy flavorful dip is thought to have originated in Chihuahua, Mexico, and was created over a campfire. It has gained it's popular in the United States and makes a great Mexican appetizer or party appetizer for Cinco de Mayo celebrations.