Let me report back. As you have all suggested the quality of food on offer was quite good. Portions are smaller than TK though. Also, some LH cost cutting measures visible; no menus, a small bottle of water instead of a pre-flight drink selection and no hot towels. Attention to detail like refills better than TK. Smiling crew. However insistence to speak German with me was little akward. Finally no priority boarding either in IST or ZRH.