It takes 3500 calories to make a pound of fat!

Beef, tenderloin, separable lean and fat, trimmed to 1/8" fat, prime, raw
» Beef Products

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Energy Fat
49.4 size D batteries 1.1 butter sticks

A serving of 453.6g contains 1243kcal, representing ± 49.4 batteries*.

A aged requires 2700kcal (107.3 batteries*) a day.

* size D, 1.5V, 19500mAh

A serving of 453.6g contains 99.02g fat, which is comparable to ± 1.1 butter sticks.