I, for one, love rum infused with whiskey (5)
I believe the answer is:
vowel
'i for one' is the definition.
(I've seen this before)
'love rum infused with whiskey' is the wordplay.
'rum' indicates an anagram (rum can mean strange or unusual).
'infused with' indicates putting letters inside.
'whiskey' becomes 'w' (alpha bravo charlie delta ...).
'love' with letters rearranged gives 'voel'.
'voel' going around 'w' is 'VOWEL'.
(Other definitions for vowel that I've seen before include "A, E, I, O or U" , "Open sound in speech" , "Non-consonant" , "E.g. A, but not B" , "Kind of letter of the alphabet" .)