Dash of liquorice infusing bold sweet (7)
I believe the answer is:
darling
'sweet' is the definition.
(both are terms of endearment)
'dash of liquorice infusing bold' is the wordplay.
'dash of' indicates taking the first letters (a small amount of the word).
'infusing' means one lot of letters goes inside another (to infuse is to fill or enter).
'bold' becomes 'daring' (I've seen this in another clue).
The first letter of 'liquorice' is 'l'.
'l' inserted within 'daring' is 'DARLING'.
(Other definitions for darling that I've seen before include "family in play" , "Term of affection" , "Pet" , "Favourite" , "Australian river and loved one" .)