The most common and most likely answer to this crossword clue is the 6 letter word KIMCHI
I've seen this crossword clue in The Guardian
K
I
M
C
H
I
More clues leading to the result KIMCHI
Buddy explains!

The straight part
We know that "pickles" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pickles = kimchi.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 KIMCHI mean?
KIMCHI noun- A Korean dish made of vegetables, such as cabbage or radishes, that are salted, seasoned, and stored in sealed containers to undergo lactic acid fermentation.
- A Korean person.