The most common and most likely answer to this crossword clue is the 5 letter word LAMBS
I've seen this crossword clue in The Daily Telegraph
L
A
M
B
S
Buddy explains!

The straight part
We know that "Hazel has such" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hazel has such = lambs.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 LAMBS mean?
LAMBS noun- A young sheep.
- The flesh of a lamb or sheep used as food.
- A person who is meek, docile and easily led.
- A simple, unsophisticated person.
- One who ignorantly speculates on the stock exchange and is victimized.
- Of a sheep, to give birth.
- To assist (sheep) to give birth.