Dietary fat provides 9 calories per gram, more than double the 4 calories per gram in carbs or protein.

A single 1-ounce shot of plain, unsweetened espresso contains about 3 calories, making it a nearly calorie-free drink on its own.

A one-cup serving of cubed raw eggplant (about 82 grams) contains roughly 20 calories, though the total changes considerably with oil absorption during cooking.

A medium ear of plain corn on the cob contains roughly 88 to 122 calories, depending on its size.

An 8-ounce cup of coffee with milk and sugar typically contains between 30 and 70 calories.

A large egg contains about 72 calories, so six large eggs provide roughly 432 calories when cooked without added fat.

The calories in coffee with milk depend entirely on the type and amount of milk. A splash (2 oz) of skim milk adds roughly 22 calories.

Five large eggs contain about 360 calories; smaller or larger eggs change the total, and cooking method can add up to 150 extra calories from fat.

Two large eggs contain about 143 to 148 calories, with exact counts depending on egg size and cooking.

Coke Zero contains zero calories per 12-ounce can, sweetened with zero-calorie artificial sweeteners instead of sugar.