Mexican food: something sharp on it with last of tabasco (7)
I believe the answer is:
burrito
'mexican food' is the definition.
(I've seen this before)
'something sharp on it with last of tabasco' is the wordplay.
'something sharp' becomes 'burr' (I can't explain this - if you can you should believe this answer much more).
'on' means one lot of letters go next to another (in a down clue, letters appear on others).
'with' says to put letters next to each other.
'last of' says to take the final letters.
The last letter of 'tabasco' is 'o'.
'burr'+'it'+'o'='BURRITO'
Can you help me to learn more?
(Other definitions for burrito that I've seen before include "that's eaten in Mexico" , "Mexican tortilla rolled round a savoury filling" , "dish from Mexico" , "Tortilla folded around a savoury filling" , "Mexican food" .)