Traditional British Ground Rice Pudding

This recipe was on the side of a Whitworth’s Brand Ground Rice packet. I’ve hunted for ages to try and find the old recipe I used to have when I was small and this looks like it. I’ve not tried it yet (will probably do the microwave version (also on the packet) which I’m adding next). Should be very nice. My mum used to add a few drops of vanilla essence, a ‘knob’ (a bit cut off the corner of a slab…) of butter and an egg white (possibly the whole egg, – can’t remember :). She also used to add a little nutmeg and a little cinnamon and mix them in before putting in the oven dish to bake.