What we get from a sour vine will help us remember a place (8)
I believe the answer is:
souvenir
'a place' is the definition.
The answer and definition can be both related to thinking as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'what we get from a sour vine will help us remember' is the wordplay.
'sour vine' can be anagrammed to 'SOUVENIR'.
Though, I'm unsure how the anagram is indicated.
Can you help me to learn more?
(Other definitions for souvenir that I've seen before include "Reminder of holiday" , "Reminder of past events" , "Keepsake, memento" , "remember seeing this?" , "something worth keeping" .)