Frites are Belgian French Fries.  

There is no place in the US that makes them as good as most any Brussels frituur.  Part of it is the Belgian potato, part of it is the oil - Belgian frites are fried in a lard blend.  Also Belgian Frites are based on the metric - a perfect one centimeter square.  The American attempt are cut 1/4 inch square.  They just don't fry the same.