01 -
In a medium bowl, combine the chilled mashed potatoes, flour, chives, garlic powder, and egg. Mix until just combined.
02 -
Form the mixture into 8-10 small patties, approximately 1/2 inch thick.
03 -
Heat the oil or butter in a large skillet over medium heat. Carefully place the potato cakes in the skillet. Cook for 3-4 minutes per side until golden brown and crispy.
04 -
While the cakes are cooking, whisk together the mayonnaise, minced garlic, and lemon juice. Season with salt and pepper to taste.
05 -
Serve the potato cakes warm with a dollop of garlic aioli.