The most common and most likely answer to this crossword clue is the 7 letter word BILTONG
I've seen this crossword clue in The Daily Telegraph
B
I
L
T
O
N
G
Buddy explains!

The straight part
We know that "dried-up food" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dried-up food = biltong.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 BILTONG mean?
BILTONG noun- (Zimbabwe) A South African food categorized by strips of lean meat cured by salting and drying, similar to American jerky.