Box D

It sounds like you're asking about a dish called "box d" that you've seen on menus at restaurants in the USA. Unfortunately, I'm not familiar with a dish by that name, and a quick search online didn't turn up any information about it.

It's possible that "box d" is a misspelling or a variation of a different dish. Can you please provide more context or information about the dish you're looking for? For example, what type of cuisine is it? Is it a main course, appetizer, or dessert? Do you remember any other details about the menu description or the restaurant where you saw it? This will help me narrow down the search and try to find the information you're looking for.