After pastrami is done brining in salt, the meat is dried, rubbed with more salt and spices, smoked, and steamed, while corned beef's brine is rinsed off before the meat is boiled. This means that pastrami is higher in sodium (630 mg per 2 oz.) than corned beef (490 mg per 2 oz.), according to nutritional facts from food market H-E-B.