This was the product of his creative efforts. He spent all afternoon collecting and adding ingredients, remembering (and changing) the recipe, and constantly stirring his soup. I thought the finished product was rather beautiful.
He enjoyed the experience so much he made a second soup from leaves, sand, paper, water, and I'm not really sure what else, but it sure stunk after a day or two! Not quite as pleasant of an activity that time around, but still perfect for pretend play.