• In a pot, add the potatoes and 1 teaspoon of salt, cover with water and bring to a boil. After the water boils, reduce the heat and let the potatoes boil for 20 minutes or until soft.
• Strain the potatoes and transfer them to a large bowl. Add butter, salt, pepper, milk and an egg. Mash everything with a blender until you get a homogeneous and sticky composition. Add the chopped parsley.

Preparation for breading:

• Prepare three bowls: one with flour, one with beaten eggs and another with breadcrumbs.

Forming the croquettes:

• With a spoon, take the potato mixture, place a cube of cheese in the center and shape it in the palm of your hand until you get a ball. Repeat the process with the rest of the ingredients.
• Dip each ball in flour, beaten egg and breadcrumbs.

Frying:

• Heat the oil in a pan on medium heat. Fry the croquettes, 3-5 times, until they become golden and a crispy crust forms. Take them out on a paper napkin to absorb the excess oil.

Preparing the Sauce:

• In a small bowl, combine the ingredients for the sauce and mix well.
• Serve the croquettes warm, along with the sauce.