I am new to pressure cooking, but not to physics. I played around with this and have managed to promote it to one of my most-often-used appliances in just a few months. Even more amazing, I demonstrated it for my mother, whose attitude went from "That thing will blow up and destroy everything" to contemplating getting one for herself. The cooker is steel, works with flat, gas, electric coil, and induction ranges, and cleans easily (I wash it by hand just after using it, so I haven't put it in the dishwasher). Just don't lose any of the pieces (if you do you can easily reorder them and they are not expensive), and check the vent either by blowing canned air through it or looking through it to see if you can see light.