The most common and most likely answer to this crossword clue is the 10 letter word VERMICELLI
I've seen this crossword clue in The Daily Telegraph
V
E
R
M
I
C
E
L
L
I
More clues leading to the result VERMICELLI
- Evil crime involved getting hold of student fare from Italy
- Part of the Roman Diet of Worms, in Italy
- Pasta poor church creatures fed to sick clergyman coming round
- Pasta dish making MC livelier
- Nasty creatures endlessly by small room, one providing food
- Back sick vicar to trap rodents with pasta
- Loathsome person almost at jail insisting primarily for pasta, perhaps
- With not all rats at small room, I make pasta
Buddy explains!

The straight part
We know that "food" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case food = vermicelli.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 VERMICELLI mean?
VERMICELLI noun- Long, slender pasta, similar to spaghetti, only thinner.
- Any type of long, thin noodles, as in rice vermicelli.
- Chocolate sprinkles.