Drink I love in cracked jar (5)
I believe the answer is:
rioja
'drink' is the definition.
(Rioja is an example)
'i love in cracked jar' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'in' means one lot of letters goes inside another.
'cracked' is an anagram indicator.
'i'+'o'='io'
'jar' with letters rearranged gives 'rja'.
'io' going into 'rja' is 'RIOJA'.
(Other definitions for rioja that I've seen before include "Spanish wine variety" , "wine region" , "Open space (ancient Greek)" , "Spanish red wine" , "Wine from northern Spain" .)