We are headed soon for a few days of ancient history tourism in Trier, and food advice would be much appreciated. German cooking is fine, but so is anything else done with style. Eating is not the main focus, so better something casual than formal & expensive -- in other words, chowhound, not Michelin. My partner is a vegetarian, so that's a consideration. (I can live happily with or without meat.) Maybe a place that offers a knowledgeable selection of local wines?
BTW, the inspiration for this trip on my part is reading Peter Heather's wonderful book The Fall of the Roman Empire. Great stuff.