The most common and most likely answer to this crossword clue is the 6 plus 5 letter word CAESAR SALAD
I've seen this crossword clue in Financial Times
C
A
E
S
A
R
S
A
L
A
D
More clues leading to the result CAESAR SALAD
- Foreign areas sadly kept back in recording meal option
- Roman emperor’s brought over a fellow’s cold dish
- Dish made with lettuce the emperor hasn't grown?
- Ruler's first-rate son leaves suitably dressed and accompanied
- Emperor and daughter unfortunately brought over for a dish
- ,14 Dictator raised as extrovert man leaves meal
- A scare as careless young man makes a dish
Buddy explains!

The straight part
We know that "a dish" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a dish = caesar salad.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.