The most common and most likely answer to this crossword clue is the 5 plus 3 letter word SMALL FRY
I've seen this crossword clue in The Daily Telegraph
S
M
A
L
L
F
R
Y
More clues leading to the result SMALL FRY
- Slender cook with fat children
- Trivial as whitebait?
- Youngsters getting minimal eggs and bacon?
- Young son and cook going round arcade
- Humiliated dramatist’s young children
- People of little importance for school of the future?
- Army falls out without head of army? Nothing significant
- Children’s items of personal laundry almost burn
Buddy explains!

The straight part
We know that "Young" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case young = small fry.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 SMALL FRY mean?
SMALL FRY noun- One or more small or immature fish.
- One or more children.
- One or more persons or things of relatively little consequence, importance, or value.