Small can with label stuck round it for sampling (7)
I believe the answer is:
tasting
'sampling' is the definition.
('taste' can be a synonym of 'sample')
'small can with label stuck round it' is the wordplay.
I cannot really understand how this works, but
'small' could be 's' (abbreviation - e.g. clothes size) and 's' is located in the answer.
'can' could be 'tin' (both are metal containers) and 'tin' is found within the answer.
'label' could be 'tag' (tag is a kind of label) and 'tag' is found within the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'for' is the link.
Can you help me to learn more?
(Other definitions for tasting that I've seen before include "Savouring" , "Sampling (food)" , "event with wine" .)