Language used in Yemen to get a coffee (7)
I believe the answer is:
arabica
'a coffee' is the definition.
(type of coffee plant)
'language used in yemen' is the wordplay.
'language' becomes 'arabic' (Arabic is an example).
'used in' means to look at the middle letters (the letters used on the inside of the word).
'yemen' becomes 'peoplesdemocraticrepublicof' (synonyms).
The middle letter of 'peoplesdemocraticrepublicof' is 'a'.
'arabic'+'a'='ARABICA'
'to get' acts as a link.
(Other definitions for arabica that I've seen before include "Variety of coffee beans" , "sort of bean" , "Variety of coffee bean" , "Shrubby tree of tropical Africa cultivated for coffee" , "African tree cultivated for coffee" .)