15. Olive Oil

Olive Oil

One tablespoon of the olive oils that you use at home contains 40 calories and it's healthier than the regular cooking oil that you use for frying. See? High calorie foods really are healthier alternatives sometimes. Not to mention, I think olive oil is the greatest invention ever. It's useful in so many ways!

Olive oil, which is pure fat, contains 1920 calories per cup. Any food that has a lot of fat in it will have a high calorie density.

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