The most common and most likely answer to this crossword clue is the 7 letter word BIRYANI
I've seen this crossword clue in The Daily Telegraph
B
I
R
Y
A
N
I
More clues leading to the result BIRYANI
- Dish sent back, Boatman saying: “No meat”
- Indian dish served back in a yard by guy
- No bone found when going over single dish
- Brainy cooks with India’s capital dish
- Brainy cooks adopting international dish
- Unusually brainy industrialist’s heading for exotic food
- Undecided man, I entertain another to food
- No cut of meat over lunchtime dish
- One's 'no' to bone reversed in spicy dish
- Rice dish made by Rani by 1
Buddy explains!

The straight part
We know that "dish/capital" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dish/capital = biryani.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.
What does BIRYANI mean?
BIRYANI noun- A spiced dish of rice, blended with meat and/or vegetables.