The most common and most likely answer to this crossword clue is the 10 letter word TUPPERWARE
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More clues leading to the result TUPPERWARE
Buddy explains!

The straight part
We know that "food containers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case food containers = tupperware.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 TUPPERWARE mean?
TUPPERWARE noun- A food-storage container (often plastic), or a set of such containers.