Food is identity. Food means survival. Food means status. Food is pleasure. Food is community. Food is humanity. These are the aspects of food that make it part of culture. This article discusses these aspects.
This piece from Italy Magazine talks about specific attributes of Italian cuisine and eating culture. It talks about a number of Italian traditions and food related superstitions. It also looks at what dishes you might see during a certain holiday or time of day. It covers a lot of the very basic attributes of Italian food culture.
This page has information on a book entitled Food is Culture. The author asserts that every step in the process of food - finding/growing, preparing, and eating - is a piece of culture. Whether it is the economics of what to gather or grow (where things like scarcity and demand come into play), or the act of consuming a nutritious diet, these are acts that are derived from and shape a societies culture.