Corned beef on marble rye

Corned beef top round (cured with: water, contains less than 2% sodium lactate, salt, sugar, sodium phosphate, sodium diacetate, flavorings, sodium erythorbate, sodium nitrite), marble rye (enriched wheat flour [wheat flour, malted barley flour, niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid], water, rye flour, contains 2% or less of each of: vegetable oil [canola oil or soybean oil], wheat gluten, rye meal, salt, caraway seeds, yeast, molasses, cultured wheat starch, caramel color [contains sulfites], vinegar), swiss cheese (part skim milk, cheese cultures, salt, enzymes), cabbage, dijon mustard (water, vinegar, mustard seed, salt, white wine, fruit pectin, citric acid, tartaric acid, sugar, spice).