I love the look of your salad ; did you prepare that one yourself?

No. I found it on Flickr. But I've eaten something similar in Germany (link). Ah, there was an Imbissbude ('snack booth') in the Bonner Altmarkt that sold all kinds of herring. Takeaway, food truck, roach coach, friterie, frietkot, and other terms ...

Ceci n'est pas un seing.