I just flew on MUC-ORD in F with LH (Feb) and they have a "special moments" second meal service before landing that is called "Vesper" by Black Forest locals. I think this is only being done in Feb and on flights from Germany to the US East Coast (although I was on a Chicago flight).
It was very good but it was a lot of food to eat, so I just sampled most things. It was a very nice touch to the flight and they also gave us a laser-cut metal wall clock ("a contemporary version of the traditional clock of the region") that was quite nicely detailed (and heavy!).
We were only 3 passengers in F, so service was spot on.
"Schwarzwald Special"
Traditional Black Forest Specialties: (all on the wooden board in the pic)
Black Forest ham
farmer-style liverwurst sausage
air-dried smoked salami
veal burger
Rahmberg cheese
red radish
gherkins
cherry tomato
Bibilis cheese
Smoked fillet of trout with apple fennel salad and horseradish cream
Bacon spread with diced apples in a jar
Potato soup with diced vegetables
Black forest cake

Fresh fruits (mostly berries)