alt Hacker NewsYes it is
> For non-prepacked foods – such as those sold in restaurants, cafés or deli counters – allergen information must be provided.
Yes it is
> For non-prepacked foods – such as those sold in restaurants, cafés or deli counters – allergen information must be provided.
The linked page is for packaging, which are unique to the EU.
The US has it's own allergen labeling guidelines, which seem similar, but I'm not going to 1:1 check. For restaurants it's mostly up to the states with the FDA providing guidance.