Time one secures a new opening for Indian cooking (8)
I believe the answer is:
tandoori
'indian cooking' is the definition.
(type of Indian cooking)
'time one secures a new opening' is the wordplay.
'time' becomes 't'.
'one' becomes 'i' (Roman numeral).
'secures' means one lot of letters goes inside another.
'a' becomes 'an'.
'new opening' becomes 'door' (I am not sure about the 'new' bit.**).
't'+'i'='ti'
'an'+'door'='andoor'
'ti' going around 'andoor' is 'TANDOORI'.
'for' acts as a link.
(Other definitions for tandoori that I've seen before include "Clay oven cooking style" , "Cuisine" , "Type of restaurant" , "Cooked in an Indian clay oven" , "Indian cooking in clay oven" .)