Don't go to restaurant – epicure's opening a can (3,2)
I believe the answer is:
eat in
'don't go to restaurant' is the definition.
I can't judge whether this definition defines the answer.
'epicure's opening a can' is the wordplay.
'opening' suggests taking the first letters.
'can' becomes 'tin' (both are metal containers).
The first letter of 'epicures' is 'e'.
'e'+'a'+'tin'='EAT IN'
Can you help me to learn more?
(Other definitions for eat in that I've seen before include "Perhaps lunch at home" , "corrode" , "Dine at home" , "Avoid restaurant" , "get takeaway?" .)