I don’t know who spread the rumor in the west that rice cookers are simply ‘unnecessary single use gadgets for foodies who eat a lot of rice’, I think of them more as ‘versatile device for depressed people with no (emotional, not literal) spoons’
Put rice (don’t even need to wash it), water, place vegetables, meat, tofu, eggs. Add soy sauce. Close the lid. Walk away.
And if you get a nice one: cook rice and eat off the cooker even 3 days later.
