The most common and most likely answer to this crossword clue is the 3 plus 3 letter word ICE TEA
I've seen this crossword clue in The Times
I
C
E
T
E
A
More clues leading to the result ICE TEA
- I caught summer in Paris on a refresher
- I was regularly seen with sea monster in the drink
- Every so often big cheat began to drink
- Drink is evil? Not very when taken with old American marijuana
- Drink that is maintaining Conservative line-up without May’s lead
- Nice summer in Africa getting half cut – it’s the cold drink
- Reserve empty table with a drink
- Reserve side lacking money for drink
- Refreshment that is ace, including bananas etc
- Sleuth in a deli regularly knocked back drink
Buddy explains!

The straight part
We know that "drink" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case drink = ice tea.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.