Everybody loves this 72-year-old Beverly institution for its namesake freshly ground burgers, but there are a number of destination-worthy sandwiches on its vast menu, like the beef melt au jus: two slices of buttery toasted rye cradling a dense matrix of shaved choice eye of round slathered in melted yellow cheese. Lift a corner, dip it into the cup of beef broth black as coffee, and contemplate ordering another. At $4.95, it’s total sandwich satisfaction for a small price.