What type of cheese is often used in traditional quesos?

Monterey Jack is the type of cheese commonly used in traditional quesos due to its melting properties and mild flavor. It has a creamy texture that blends well with other ingredients, making it ideal for creating a smooth queso dip. Monterey Jack also complements spices and other flavors typically found in Mexican cuisine, enhancing the overall taste of the dish.

In contrast, cheddar, while popular in various dishes, tends to have a sharper flavor which might overwhelm the delicate balance of a queso dip. Parmesan is not typically associated with quesos because its hard texture and strong flavor do not lend themselves to the creamy consistency desired in such dips. Swiss cheese, although it melts well, has a nutty flavor profile that would not provide the traditional taste expected in quesos. Thus, Monterey Jack stands out as the most suitable choice for traditional quesos.