I have a very old one-button Zojirushi (it looks kind of like this https://www.zojirushi.com/user/images/prod/13.2.jpg https://www.zojirushi.com/user/images/pro

I have a very old one-button Zojirushi (it looks kind of like this https://www.zojirushi.com/user/images/prod/13.2.jpg https://www.zojirushi.com/user/images/prod/13.2.jpg). I don't believe it's a pressure cooker, but that's a good question. There's not other buttons or controls or any kind. In fact to turn it off I have to unplug it. I think when we bought it ~20 years ago it was ~$100? When rice is in it, it takes about 20 minutes to cook. When I toss ribs or chicken in it it (another good recipe is chicken in glutinous rice soup [1]) will run for considerably longer and the meat that comes out is glorious. 1 - https://en.wikipedia.org/wiki/Samgye-tang https://en.wikipedia.org/wiki/Samgye-tang