You can keep water and solid food warm in the bottle warmer in bottle/dinner mode. Add 200 ml of water to the water reservoir and place the bottle/jar in the reservoir. Set the display to bottle/dinner mode, set the desired temperature, and the time will start. The bottle warmer switches off automatically after 10 or 3 hours. You can of course stop the programme earlier. Keeping food warm for a long time is not recommended. See the manual for more detailed instructions.