The most common and most likely answer to this crossword clue is the 5 letter word NACHO
I've seen this crossword clue in The Times
N
A
C
H
O
More clues leading to the result NACHO
- North American food, mostly
- Given a choice, some would go for hot snack
- North American company importing hot food from Mexico
- Found in tin, a chocolate chip
- Bit of food? Offer some men a choice
- Snack served in Vienna chophouse
- Auditors guzzling half of chef’s exotic grub
- Is able to return home without me for food
- Chip on a chop? Only partly
- Chip in minimum of oil, hot vessel lifted
Buddy explains!

The straight part
We know that "Bit of food" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bit of food = nacho.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 NACHO mean?
NACHO noun- A single tortilla chip from a dish of nachos.