Syrup mixed in drink in garden awfully popular at the end of June (9)

I believe the answer is:

grenadine

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'syrup' is the definition.
(I know that grenadine is a type of syrup)

'garden awfully popular at the end of june' is the wordplay.
'awfully' indicates an anagram.
'popular' becomes 'in' ('in' can mean trendy).
'at the end of' indicates one should take the final letters.
The last letter of 'june' is 'e'.
'garden' is an anagram of 'grenad'.
'grenad'+'in'+'e'='GRENADINE'

'mixed in drink in' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for grenadine that I've seen before include "Pomegranate cordial" , "silk fabric" , "Sweet cordial" , "Pomegranate juice syrup" , "material" .)

I've seen this clue in The Guardian.

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