1. Mix 0.5 liters of cold milk with the cornstarch.
2. In a saucepan, prepare a roux by melting the butter and adding the flour. Cook until golden brown.
3. Add the remaining milk and Quescrem Christmas cheese. Cook over medium heat for 5 minutes until a homogeneous mixture is obtained.
4. Add the chopped jerky and the milk with cornstarch. Continue cooking until the mixture thickens.
5. Let the dough cool.
6. With the chilled dough, form small balls (croquettes).
7. Batter the croquettes and fry them in hot oil until golden brown and crispy.