i was told this

All pads should be bedded in with a series of gradually increasing speed stops on a quiet road from

30 - 10
40 - 10
50 - 10
60 - 10
70 - 10

Its important you do not to come to a complete stop, by the time you get to the 50 or 60 one you will have gasses venting from the pads - this is normal.

Once complete drive around to let the disc and pad cool naturally then that should be it.