The most common and most likely answer to this crossword clue is the 7 plus 4 letter word CHICKEN FEED
C
H
I
C
K
E
N
F
E
E
D
More clues leading to the result CHICKEN FEED
Buddy explains!

The straight part
We know that "amounts to nothing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case amounts to nothing = chicken feed.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.