A beef on weck in Los Angeles! The beef on weck is a specialty of the greater Buffalo area that, sadly, hasn’t gained much traction beyond western New York. The last time I saw one was more than five years ago, at the All-Star Sandwich Bar in Cambridge, Massachusetts. I ordered it without hesitation then, and I ordered it without hesitation when I saw the menu at Top Round. In both cases I was well rewarded.
The beef on weck is all all-time great as far as doing a lot with almost nothing. Roast beef on a roll sprinkled with kosher salt and caraway seeds is all that’s really there, though usually with some horseradish. And that’s all it takes; the herbal notes from the seeds balance well against the richness of the beef, the salt ramps everything up, and the horseradish brings a pleasant heat. (Like all sandwiches with horseradish, this did need more horseradish.)
I don’t know how long it will be before I see another beef on weck, but I know that when I see it I’m going to order it. I heartily recommend you do the same.