A week where families cook for their neighbors. Most Dragonborn clutches are fairly insular and do not associate much with other clutches in their area – this is the one week where it is expected that they will attempt to become social with their neighbors.
In areas where there are not a lot of Dragonborn, they have taken to cooking for their smooth skinned neighbors, though this does sometime lead to misunderstandings as the smooth skins aren't able to tolerate the same level of spice and heat that some Dragonborn can tolerate, or like their food a temperature above freezing cold.