Mud is edible. I read in an article that there is a tribe in Africa that just dries mud and eats it as a snack. I wonder if it's delicious. In the last century1960s, I also ate mud with adults. That kind of soil is called Guanyin soil, which is white and delicate, smells of soil and has sand particles, which can't be excreted if you eat too much. At least there is no such technology at present, and the soil does not have the nutrients needed by the human body. In the end, it can't be eaten as a meal.