Simply put, calorie density is the number of calories in a given volume of food. Certain foods have more calories packed into them – pound for pound – than others. That means each food has its own caloric density. Fresh tomatoes, for example, have just 90 calories per pound. Bagels are packed with more than 1,200 calories per pound. (Pritikin.com)
Foods that are HIGH in calorie density tend to be DRY and/or FATTY. These foods don’t take up a lot of space (on your plate or in your stomach), but they have a HIGH calorie cost. Each bite is JAM PACKED with calories. Examples include butter, oils, salad dressings, sugar, nuts, seeds, dry bread, dry cereal, crackers, egg yolk, avocado, dried fruit, and meat.