Augustiner beer, either brewed in Munich or Salzburg is my favorite beer of all time.
The potato salad at Andechs Monastery will have me coming back! I ate it in 2010 and still long for more! The beer there isn't bad either and ties as my second favorite beer in the world.
The best lunch I've had in Europe was the Duck Gizzard Salad at Schwendi Bier & Winstub in Colmar France. Actually that might tie with a lunch of sausage, cheese, bread, and some fruit eaten anywhere in Europe!