The burger at Angie Mar’s Le B. is often a rare point, with only 9 served a night, and only on the bar. At higher than $40, it is Tremendous luxe, one that Mar produced well known in the Beatrice Inn: an Angus Mix beef is dry-aged for 45 times and dressed with d’affinois cheese, caramelized onions, and a purple wine sauce. It’s served with sh