The most common and most likely answer to this crossword clue is the 7 letter word TOSTADA
I've seen this crossword clue in Financial Times
T
O
S
T
A
D
A
More clues leading to the result TOSTADA
- Drunk upset a little bit, wanting a bit of food
- Barker grabbing little Mexican food
- Drunk getting up thanks stateside lawyer bringing food
- Hot jalapeño peppers to finish with … et voilà, Mexican food!
- Good man fed to unpleasant chap a Mexican dish
- Way to feed worm a Mexican dish
- Stoat out gathering commercial food that’s fried
- Reject slice of bread at so tawdry a Mexican dining option
- Approaching street, notice a crunchy snack
- In the direction of street, spot a Mexican dish
Buddy explains!

The straight part
We know that "Mexican dish" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case mexican dish = tostada.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 TOSTADA mean?
TOSTADA noun- (often in the plural) A flat tortilla that has been fried or toasted, or a dish based on this. Usually associated with the cuisine of Latin America.
- (southern California) A bowl-shaped tortilla that has been fried and filled with various ingredients.