What's In a Hot Dog
It depends on the hot dog, of course, but the typical large brand dogs are beef/
pork combinations, with less than half of the total dog being meat. The ground up animal flesh is supplemented with high sodium, fat and nitrate content. Fat content averages about 22%. Sodium content in major brands ranges from 300 to 760 mg per dog.
A curing solution comprised primarily of salt and water is used to make the meat easier to squirt into the sheep intestine casings, improve flavor, and inhibit bacterial growth. Sodium nitrite is included in the curing solution to retard the development of rancidity and stabilize the meat color. Curing accelerators such as sodium ascorbate or sodium erythorbate may also be added to preserve the color of the meat during storage.