The most common and most likely answer to this crossword clue is the 5 letter word STOUT
I've seen this crossword clue in Financial Times
S
T
O
U
T
More clues leading to the result STOUT
Buddy explains!

The straight part
We know that "Beer/fa" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case beer/fa = stout.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 STOUT mean?
STOUT noun- A dark and strong malt brew made with toasted grain.
- An obese person.
- A large clothing size.
- Large; bulky.
- Bold, strong-minded.
- Proud; haughty.
- Firm; resolute; dauntless.
- Materially strong, enduring.
- Obstinate.
- Gnat.
- Gadfly.