Drink first drop of malt whisky, say, for morale (4,6)
I believe the answer is:
team spirit
'for morale' is the definition.
(synonyms)
'drink first drop of malt whisky' is the wordplay.
'drink' becomes 'tea' (tea is a kind of drink).
'first drop of' suggests taking the first letters.
'whisky' becomes 'spirit' (I've seen this before).
The initial letter of 'malt' is 'm'.
'tea'+'m'+'spirit'='TEAM SPIRIT'
'say' acts as a link.
(Other definitions for team spirit that I've seen before include "mood in the group" , "feeling of camaraderie" , "Willingness to work together" , "Morale" , "Cooperative had plenty of?" .)