Culinary Frankfurt: Würstchen / Grüne Sauce / Handkäs mit Musik

The Frankfurter boiled Würstchen (sausage) is made purely from pork and is well-known and popular all around the world. It is heated in hot water for 8 minutes and traditionally served with bread and mustard or horseradish.
Grüne Soße (Green sauce) was one of the favorite dishes of the German author, Goethe, one of the city/s most famous former residents. Green sauce is made from eggs, oil and vinegar, salt, and seven different spices: borage, chervil, chives, cress, parsley, salad burnet, and sorrel. Green sauce is traditionally served with hard boiled eggs and boiled potatoes, but can also be found served over roast pork, schnitzel, or other dishes.
Handkäs is a handmade, round, sour milk cheese, generally served in vinegar and oil. “Mit Musik” means served with chopped onions, and the “music” is said to come later, resulting from the effect of the onions. Handkäs is fairly firm, and a little bit funky in flavor, but quite flavorful when offset with the oil and vinegar and onions. Sometimes Handkäs is also served with caraway seeds either on top or on the side.