My Instant Pot is a Duo Plus. I haven't used any other brand. I use this IP quote often. I use the yogurt button to make yogurt and there is a sterilize button that I use to sterilize my yogurt spoons, spatula, small bowls, jars etc. Below pic shows the control panel with all the options you have. Each size pot has a minimum and a maximum liquid requirement for pressure cooking. My IP is 6 qt which requires 1.5 cups liquid. I add enough liquid to cover my implements up to the maximum fill line in the inside of the stainless inner pot. Works great. I also use the IP for many other recipes. Love it. Sorry for picture quality...I'm a novice at technology!