A tasty Cuban chicken and rice casserole called Arroz Imperial (Imperial Rice) but made low carb by using grated cauliflower instead of rice. There are as many recipes for Arroz Imperial as there are cooks that make it. In that respect it is like a Shepherd's Pie or Pâté Chinois. Ham, chorizo and shrimp are routinely added, like you would with a paella. An entire casserole is often purchased for take-away from small Cuban restaurants and served for parties along with other dishes. What is unique about this recipe is that it uses grated cauliflower instead of rice, reducing the calories and carbs significantly. The "rice" is then more seasoned than usual to look and taste like the rice you would have with a traditional Cuban arroz con pollo. The use of mayonnaise may seem odd but it adds greatly to the flavor and creaminess of the dish, and in the end is less mayonnaise per serving then you might have in a serving of tuna fish salad.