I was in the lounge last week in FRA and it was terrible, I had to go to a restaurant to get some food. They had 2 terrible sandwich options that basically had nothing in them, most people were just drinking beer (is that considered food in Germany?).
The Aspire Lounge in ZRH was far superior to LH's offerings.
It's a shame, because usually LH has quite decent catering in it's lounges and the Business Class offering on board is pretty much normal!