Leave sandwich to drink last drop of coffee in cup (6)
I believe the answer is:
goblet
'cup' is the definition.
(I know that goblet is a type of cup)
'leave sandwich to drink last drop of coffee' is the wordplay.
I cannot quite understand how this works, but
'leave' could be 'let' (letting is a kind of leaving) and 'let' is located in the answer.
'last' could be 'go' (synonyms) and 'go' is found in the answer.
A single letter 'b' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
'in' is the link.
Can you help me to learn more?
(Other definitions for goblet that I've seen before include "Bowl-shaped drinking vessel" , "small mouth?" , "Chalice" , "Large drinking cup" , "Drinking glass with stem and foot" .)