Make the garlic roux

• Melt the butter in a saucepan with the minced garlic.
• Pour in the milk and bring to a boil.
• Add the all-purpose flour and mix until a smooth dough forms.

Combine with the potatoes

• Transfer the dough to the mashed potatoes.
• Add the spices, cornstarch and Parmesan cheese.
• Mix everything into a homogeneous, firm mixture.

Shape the croquettes

• Roll the mixture into small balls.

Fry until golden

• Heat the oil and fry the croquettes until crispy and golden brown.
• Drain on paper towels.

Coat and serve

• Toss the hot croquettes in extra Parmesan cheese.
• Serve immediately with sour cream for dipping.