To prepare a side dish: pour at least 1 liter of water into a pot and bring to a boil, put a bag with a mixture of cereals with vegetables, mushrooms and greens into it, add salt and cook on low heat until ready for 20-25 minutes.
Pull out the bag, lifting it by the loop with a fork. Let the water drain. Open the bag by cutting it with scissors. Put the contents of the bag on a plate, mix. If desired, add vegetable oil or butter.