laver and egg drop soup, can I eat it overnight? I think you can eat it overnight, but after overnight, the nutritional value is not as good as it used to be. You'd better cook less, and you can cook more when you have enough. If you eat it the next day, the nutritional value will be less, and it's not as delicious as what you cooked at that time, so I suggest you cook less and eat enough, and don't eat overnight!