In November, David and I went to Tiergartenquelle for our last night in Berlin. It was recommended by a friend as "very German" but with "American-sized portions" (which I still giggle at whenever I remember). For the record, he was right: the portions were enormous (and delicious).
Beyond portion sizes, I loved this place for its charm and warmth. It's located directly underneath the S-Bahn so while you're eating, you can hear and feel the train come and go overhead. I suppose this might be unnerving for some but I found it comforting. I can't explain it. That, along with communal seating, dim lights, and sitting across from one of my favorite people made for a lovely last evening.
I miss Europe.