Been using remoska for about twenty years. Since they came to the attention of the british. Simple to use. Easy to clean. Now in a 4 litre and stainless steel. So can use a cooking container within the device. Even easier cleaning. My only complaint to them that are on the design team. Dont use teflon on the inside of the lid. And return to a metal trivet, or just tell us to use a heatproof pad. (Which is what i do, the plastic trivet is cheap looking and black plastic so cant be recycled.) Then i would be very very happy. As it uses a small amount of electricity it is another bonus factor. I highly recommend.