Thinking outside the bun

I was walking down the street and remembered I needed some groceries. I saw some cardboard lying on the ground and immediately thought "bingo!" My inspiration is a man in Beijing who has a plan to deal with pesky recycling issues. What do you do with all that excess cardboard? Easy: Pick up the cardboard on the street, soak it in caustic soda, then make delicious steamed buns. He mixes 60% cardboard with 40% pork fat and seasoning. He says most customers can't tell the difference, but he wouldn't eat them.