I want a rice cooker that can cook medicine, soup and porridge. . . What brand is cost effective? . The rice cooker can set time to cook porridge and soup. 2007- 1-4 how can a rice cooker make soup without porridge? Rice cookers, also called rice cookers, electronic tile cookers and rice cookers, have a simple structure and are more like rice cookers-including a shell, an inner pot, a pot cover, a plug and a switch. The working principle of this tool was invented in the mid-1970s, and it cooks food very slowly at low temperature. When the temperature in the pot reaches a certain level, it will stop rising and keep at a stable temperature. Its operation is very simple, once it is set, it no longer needs to be looked after, and. It is best to soak red beans for 1-3 hours before cooking. When I cooked black rice and red bean porridge, I used small red beans and soaked them for 1 more hours. Cooked in a pressure cooker, it will rot in 20 minutes. Purple casserole is slower, but the effect is the same.