Hot-Smoked Salmon. Hot-smoked salmon produces fish that is cooked entirely through. The process, which occurs between 120 and 180 degrees Fahrenheit, takes between six and 12 hours. Unlike cold-smoked salmon, hot-smoked salmon flakes and is most frequently sold in filets rather than slices or sides. A 3-ounce serving of hot-smoked salmon contains 99 calories per serving but only 571 milligrams of sodium. It contains the same amount of phosphorous and potassium as cold-smoked salmon.