Rice to me should be cooked very fast (8)
I believe the answer is:
meteoric
'very fast' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for meteoric that I've seen before include "(Of change) very rapid" , "Spectacularly fast" , "with brilliant speed" , "flashing!" , "Of a shooting star; remarkably fast" .)