The most common and most likely answer to this crossword clue is the 7 letter word TROPHIC
T
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More clues leading to the result TROPHIC
Buddy explains!

The straight part
We know that "It's about food" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case it's about food = trophic.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 TROPHIC mean?
TROPHIC adjective- Of or pertaining to nutrition.
- Describing the relationships between the feeding habits of organisms in a food chain.
- Of or pertaining to growth.