Your first task about midnight is making a dairy product (6)
I believe the answer is:
yogurt
'a dairy product' is the definition.
(yogurt is a kind of dairy product)
'your first task about midnight is making' is the wordplay.
'first' says to take the initial letters.
'about' means one lot of letters go next to another.
'midnight' becomes 'g'.
'is making' indicates an anagram.
The initial letter of 'task' is 't'.
'your'+'t'='yourt'
'yourt' after 'g' is 'gyourt'.
'gyourt' is an anagram of 'YOGURT'.
(Other definitions for yogurt that I've seen before include "Milk-derived food" , "Food made from milk thickened with bacteria" , "Dairy product made from curdled milk" , "healthy breakfast" , "Milk-food" .)