Top blue corn tortilla chips with mango slices, cotija cheese and a squeeze of lime juice for a colorful appetizer. Blue corn tortilla chips make these Mexican-style appetizers pretty, but any variety will work. Look for cotija cheese, a type of aged Mexican cheese, near other specialty cheeses or in Mexican grocery stores. You may also find it labeled “queso añejo” or “queso añejado.” Finely crumbled Parmesan cheese can be used as a substitute. Download a FREE Thanksgiving Side Dish Recipe Cookbook!