Certainly hurry to consume whisky in former days (10)
I believe the answer is:
yesteryear
'former days' is the definition.
'yesteryear' can be an answer for 'days' (I have seen 'Nostalgic days' mean 'yesteryear' so perhaps 'days' could also mean 'yesteryear'). I'm not sure about the 'former' bit.
'certainly hurry to consume whisky' is the wordplay.
'certainly' becomes 'yes' (I've seen this before).
'hurry' becomes 'tear' (tear is a kind of hurry**).
'to consume' indicates putting letters inside.
'whisky' becomes 'rye' (rye whisky is a kind of whisky).
'tear' enclosing 'rye' is 'teryear'.
'yes'+'teryear'='YESTERYEAR'
'in' is the link.
Can you help me to learn more?
(Other definitions for yesteryear that I've seen before include "Days of old (poet.)" , "Former times" , "Rossetti's translation questioned whereabouts of its snows!" , "nostalgic time, perhaps" , "Days gone by" .)