When cooking rice with the Rommelsbacher Multi Rice Cooker MRK 500, it is generally not recommended to add salt directly during the cooking process. Here's why:

- Salt can seal the surface of the rice and prevent the spices and liquids from penetrating evenly.
- It is better to add the salt after cooking and then season the rice to achieve better flavour development.

It is therefore advisable to add the salt after the rice has been cooked and then season it.