Finally got around to cooking it yesterday, and realised there are actually two separate instructions on the packet! Either cover with cold water, boil and simmer for 10-15 minutes till all the water is absorbed, or soak in boiling water for 30 minutes.
So what did I do? Well, I opted for a halfway option. Poured boiling water over it, brought it back to the boil and simmered it for maybe 10 minutes. It was a bit overdone TBH. I think next time I shall use the boiling water and soak method, which is what I do for couscous. It really seems to be a coarser version of couscous.