Triple rum, hot inside, could be aphrodisiac (7)
I believe the answer is:
philtre
'be aphrodisiac' is the definition.
'triple rum hot inside' is the wordplay.
'rum' indicates an anagram (rum can mean strange or unusual).
'hot' becomes 'h' (abbreviation eg on taps).
'inside' is an insertion indicator.
'triple' is an anagram of 'piltre'.
'piltre' going around 'h' is 'PHILTRE'.
'could' acts as a link.
(Other definitions for philtre that I've seen before include "Magic love potion" , "It makes you love" , "Love-potion" , "Exciting drink" .)