String cheese is any of several different types of cheese where the manufacturing process aligns the proteins in the cheese, which makes it stringy.
Traditional Korbáčiky from Slovakia
American string cheese
Quesillo refers to different Latin American, Spanish, and Filipino foods or dishes depending on the country:
Quesillo filled with dulce de cayote from Salta, Argentina
Grilled Oaxacan quesillo
A tlayuda topped with quesillo
Nicaraguan quesillo