All the space not yet full in the liquor store (9)
I believe the answer is:
stillroom
'all the space' is the definition.
I can't judge whether this definition defines the answer.
'not yet full in the liquor store' is the wordplay.
I cannot quite see how this works, but
'not' could be 'o' (I've seen this in other clues) and 'o' is located in the answer.
'yet' could be 'still' (synonyms) and 'still' is found within the answer.
'store' could be 'rom' (ROM is an example) and 'rom' is found in the remaining letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for stillroom that I've seen is " Pantry".)