What preparation method drastically changes cod's nutritional profile by adding substantial fat and calories?

Answer

Deep-frying

The nutritional profile of cod changes substantially when it undergoes deep-frying, a method commonly used in dishes like fish-and-chips. While baking, broiling, or steaming allows cod to retain its status as a very lean source of protein, submerging it in hot oil significantly increases the fat and calorie content of the meal. Furthermore, if the frying oil is repeatedly heated past its smoke point or is old, undesirable oxidized compounds can be introduced into the fish tissue.

What preparation method drastically changes cod's nutritional profile by adding substantial fat and calories?
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