It will take hardly 10 minutes to grate cauliflower, provided you know the exact stepwise procedure to do the same. First, wash thoroughly your cauliflower and let it pat dry. Take a sharp knife and cut through the stems of small flowers of the bunch. Take a nice cheese grater and rub the small sectioned cauliflower through it till it reaches the stem part. Another simple way to grate cauliflower is to make it into small chunks and put it in food processor with grating blade.