Turn upside down in Zinfandel vessel (5)
I believe the answer is:
delve
'turn upside down' is the definition.
The definition and answer can be both to do with contact as well as being verbs in their base form.
Perhaps you can see a link between them that I don't see?
'in zinfandel vessel' is the wordplay.
'in' indicates a hidden word.
'DELVE' is hidden in the letters of 'zinfandel vessel'.
Can you help me to learn more?
(Other definitions for delve that I've seen before include "Search deeply for information" , "Make painstaking enquiries (into something)" , "Dig - rummage" , "Rummage deep (in)" , "Reach down and search" .)