Left one latte stirred around slightly (1,6)
I believe the answer is:
a little
'slightly' is the definition.
(I've seen this in another clue)
'left one latte stirred' is the wordplay.
'left' becomes 'l' (common abbreviation).
'one' becomes 'i' (Roman numeral).
'stirred' indicates anagramming the letters.
'l'+'i'+'latte'='lilatte'
'lilatte' anagrammed gives 'A LITTLE'.
'around' is the link.
(Other definitions for a little that I've seen before include "Rather" , "to some degree" .)