the spices, colors, and sausage! i don't really eat a ton of sausage although its a favorite of mine. it is very fatty but also almost always contains MSG. when think of cajun, its not crawfish that come to mind, but sausage.
You'll find your own measurements for this, but I usually use four parts cayenne pepper, two parts black pepper, two parts garlic powder, one part onion powder, and one part salt. Sometimes I add dried parsley." Many Cajun cooks season their food simply, with only salt, black pepper and red pepper, allowing the flavor of the dish's ingredients to take center stage.
An authentic Cajun meal is usually a three-pot affair, with one pot dedicated to the main dish, one dedicated to steamed rice, skillet cornbread, or some other grain dish, and the third containing whatever vegetable is plentiful or available.