The most common and most likely answer to this crossword clue is the 6 letter word EXPORT
I've seen this crossword clue in The Daily Telegraph
E
X
P
O
R
T
More clues leading to the result EXPORT
- Sandwich spread?
- Send abroad from old harbour
- Sandwich, perhaps, and beer
- I leave the country to earn money
- Sandwich for instance to take abroad?
- Sandwich maybe for selling abroad
- Wine now becoming vinegary, say, to sell overseas
- No more Post Office? Right time to deliver abroad
- Partner once left strong brown beer
- No longer left with something to sell abroad
Buddy explains!

The straight part
We know that "strong beer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case strong beer = export.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 EXPORT mean?
EXPORT noun- Something that is exported
- The act of exporting
- To carry away
- To sell (goods) to a foreign country
- To cause to spread in another part of the world
- : to send (data) from one program to another
- To put up (a child) for international adoption.
- Of or relating to exportation or exports