Making the R in "beer” bigger (6)
I believe the answer is:
larger
'bigger' is the definition.
('large' can be a synonym of 'big')
'making the r in beer' is the wordplay.
I cannot really see how this works, but
'r' is present in the answer.
'beer' could be 'lager' (type of beer) and 'lager' is found in the leftover letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for larger that I've seen before include "Bigger, greater" , "Ebullient person may be describes as ?? than life" , "bigger,greater" , "more stout" , "More comprehensive" .)