I have tried to make clotted cream a couple of times now, and its ok but nothing worth sharing, not til I have got better at it. The right milk is important,and I have never tried on a normal hob, only on the top plate f a range.
If you can get some of the real stuff sent I would try it, just once, to give you a guidline. Its heaven. Just heaven.
In omnibus amor et iustum