What load/demand is required by the cooker?
I assume this is domestic?
32A is suitable for up to 15kW on a cooking appliance, taking diversity in to consideration and the provisions that there is no derating of cables, through method of installation and the manufacturers instructions are abided by.
Though you state cable is of a higher current rating, there are other factors to take in to consideration as I have mentioned above: Derating factors of cables, regarding the method it was installed(the common factors are if cable is within/touching thermal insulation, contained in trunking/conduit, also grouping of cables, ambient temperature and fuse type may need to be considered)