I’ve just added some ensure drinks to my bob and will add them to the car bag ( not sure of the acronym) My mum used them in the hospital and has them from time to time when she loses her appetite. They are milkshakes, 300 cal and have added vitamins and minerals. Thought they would be useful for emergencies when you don’t have a chance to cook or are recovering from illness. I think they have a decent shelf life too.