Bao, or baozi, are steamed buns filled with chopped meat (usually char siu barbecued pork) that are a prized regular in the yum cha (dim sum) carts. They are wildly popular right now with food trucks and probably set to become the next worldwide food craze. There is something about the cushy lighter-than-air bun and spicy sauce in the centre that makes people go weak at the knees. The dried milk powder gives the buns a sweet taste but if you don’t have it, they still work really well.