A Chinese restaurant near me built a plastic enclosure at their doorway, with an airlock that they place the food into, before closing the door and letting you open the opposite door. It works great, although it was definitely non-trivial to construct.
A Chinese restaurant near me built a plastic enclosure at their doorway, with an airlock that they place the food into, before closing the door and letting you open the opposite door. It works great, although it was definitely non-trivial to construct.