The most common and most likely answer to this crossword clue is the 8 letter word TOSTADAS
T
O
S
T
A
D
A
S
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 = tostadas.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 TOSTADAS mean?
TOSTADAS 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.