The most common and most likely answer to this crossword clue is the 7 letter word CHARRED
I've seen this crossword clue in The Sunday Telegraph
C
H
A
R
R
E
D
More clues leading to the result CHARRED
- Vegetable, we hear, that's scorched
- Worked as a cleaner, getting blackened a bit?
- Toasted vegetable is picked up
- Cleaner Ruby Black
- Cleaned house superficially affected by fire
- Affected by fire – as a Somerset town is reported to be
- Vegetable’s said to be burned
- Vegetable, so to speak, carelessly cooked?
- Burnt fish, like snapper say?
- Cleaning woman, embarrassed, is scarred by firing
Buddy explains!

The straight part
We know that "carelessly cooked?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case carelessly cooked? = charred.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 CHARRED mean?
CHARRED verb- To burn something to charcoal.
- To burn slightly or superficially so as to affect colour.
- To turn, especially away or aside.
- To work, especially to do housework; to work by the day, without being a regularly hired servant.
- To perform; to do; to finish.
- To work or hew (stone, etc.).
- Burnt, carbonized.