Actually, we don't have prawn cocktail, it's just shrimp cocktail and very popular. I had prawns in Italy and they are very different.

Southern food (and Cajun) is uniquely American as well as Tex Mex, which is nothing like native Mexican food, and in Mexico they don't serve chips and salsa with every meal. I would say Tex Mex is very popular in the US. Lots of cheese and ranchero sauce, which is probably why Houston got "Fat City" a year ago. Fattening things like Frito Pie too, which is chili, cheese and Frito Corn Chips.

Typical Southern food is chicken fried steak with gravy (made with cheap meat that's pounded thin and deep fried and smother with white gravy), cornbread, okra, grits and such--what people say is "good comfort food." I never ate this stuff until I came to Texas. Great thing about Houston is that there are tons of cheap restaurants, so just about every cuisine is available.