While iceberg lettuce has a bad reputation of being low in nutrients, thats not exactly true its just lower in nutrients than some other types of. Lettuce, iceberg includes crisphead types, raw Nutrition Facts Calories. CALORIC RATIO PYRAMID. This graphic shows you what percentage of the calories in a food come from carbohydrates, fats, proteins, and alcohol. Faro Recipes. If you are trying to achieve a specific distribution of calories, such as the 4. Zone diet, or the more traditional 6. Storing Fresh Produce Refrigerators should maintain a temperature of 41 F, or less, but temperatures inside a refrigerator can range from colder 32 F to warmer. Lettuce Types' title='Lettuce Types' />Caloric Ratio Pyramid will show you how recipes, meal plans, or individual foods line up with those goals. Foods low in fat, for example, will cluster along the bottom edge of the pyramid, ranging from foods that are high in carbohydrates at the left edge to foods that are high in protein at the right edge. Foods low in carbohydrates will cluster along the right edge of the pyramid, with foods that are high in fat at the upper edge and foods that are high in protein at the lower edge. Foods that have roughly the same number of calories from fats, calories, and protein will be found closer to the center of the pyramid. Read more about the Caloric Ratio Pyramid.