Annually, each regular creamery is reviewed (5,4)

'annually' is the definition.
(synonyms)

'each regular creamery is reviewed' is the wordplay.
'each' becomes 'every' (synonyms).
'regular' means one should take alternating letters.
'is reviewed' shows that the letters should be reversed in order.
The alternating letters of 'creamery' are 'raey'.
'raey' written backwards gives 'year'.
'every'+'year'='EVERY YEAR'