What makes up an organization’s culture?

Saving this quote from The Practice of Adaptive Leadership:

An organization’s culture is made up of its folklore (the stories that people frequently tell that indicate what is most important), its rituals (such as how new employees are welcomed into the company), its group norms (including styles of deference and dress codes), and its meeting protocols (like modes of problem solving and decision making). All of these cultural ingredients influence the organization’s adaptability.

Unlike structures, the culture of an organization is not usually written down or formally documented, so it may be hard to describe in precise terms. But like structures, culture still powerfully determines what is considered acceptable and unacceptable behavior.