The most common and most likely answer to this crossword clue is the 6 letter word HUMMUS
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Buddy explains!

The straight part
We know that "dip" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dip = hummus.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 HUMMUS mean?
HUMMUS noun- A Levantine Arab dip made of chickpea paste with various additions, such as olive oil, fresh garlic, lemon juice, and tahini, often eaten with pitta bread, or as a meze. It is mostly eaten in the Levant.