The most common and most likely answer to this crossword clue is the 3 plus 3 letter word TEA BAG
I've seen this crossword clue in The Sunday Telegraph
T
E
A
B
A
G
More clues leading to the result TEA BAG
- Bitten by sheep, a graduate leaves under wraps
- Roughly beat silver leaves in this
- Put a label round each barrel for drink producer
- Leaves collected here for potting
- Leaves container label covering each barrel
- Leaves container with airline, having gone through wrong gate
- “Baa” surprisingly stifled by sheep that’s going to pot?
- One going to pot, getting into hot water?
- Label covering each black container full of holes
- It takes the strain out of brewing
Buddy explains!

The straight part
We know that "container full of holes" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case container full of holes = tea bag.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 TEA BAG mean?
TEA BAG verb- (chiefly water sports) To dunk into the sea or another body of water
- To lower one’s testicles into the mouth of another person, or onto the face or head of another person.
- To sit or crouch repeatedly on the head of another player's character after they are dead.