Pilsner? He ordered refill (9)
I believe the answer is:
replenish
'refill' is the definition.
(I've seen this before)
'pilsner? he ordered' is the wordplay.
'ordered' indicates an anagram.
'pilsner'+'he'='pilsnerhe'
'pilsnerhe' anagrammed gives 'REPLENISH'.
(Other definitions for replenish that I've seen before include "Top up" , "Replace" , "Restore" , "Fill again, renew a supply" , "Fill up again, say glass with drink" .)