Place undrained black beans, cumin, garlic, salt and black pepper in a saucepan and cook over moderate heat until thick; mash into a paste and set aside to cool.
Once cool, stir in the cotija cheese.
Warm tortillas in a microwave until pliable.
Place some filling on tortilla not too close to the edges and roll up, securing in an “x” with 2 toothpicks.
Fry in shallow hot oil until browned, removing toothpicks after the tortilla browns and holds its shape.
Serve hot with salsa or other dippers you like, such as guacamole or sour cream.
