Dutch helping for as long as it takes (8)
I believe the answer is:
duration
'as long as it takes' is the definition.
I can't tell whether this definition defines the answer.
'dutch helping' is the wordplay.
'dutch' becomes 'du' (abbreviation).
'helping' becomes 'ration' (a ration is a serving or helping).
'du'+'ration'='DURATION'
'for' is the link.
Can you help me to learn more?
(Other definitions for duration that I've seen before include "Period during which something continues" , "Time scale" , "Around it (anag.)" , "Length of time" , "Term, span, time" .)