The most common and most likely answer to this crossword clue is the 5 plus 7 letter word CHILL CABINET
I've seen this crossword clue in The Guardian
C
H
I
L
L
C
A
B
I
N
E
T
Buddy explains!
The straight part
We know that "Something seen in Aldi / Something seen in Aldi" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case something seen in aldi / something seen in aldi = chill cabinet.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.