Benedictine is a traditional spread or a dip originating from Kentucky. It's usually made with a combination of cream cheese, a pinch of cayenne pepper, cucumber juice, onion juice, and a few drops of green food coloring (alternatively, spinach or parsley).
The dip was invented by Jennie Benedict, the editor for the Louisville Courier-Journal. Nowadays, the dip is often elevated by mayonnaise, sour cream, dill, grated cucumbers, and grated onions (instead of just the juices). It's recommended to serve it with crackers or vegetables.