Ham & swiss sub on white

Ingredients

White sub bun (enriched wheat flour [ wheat flour, malted barley flour, niacin, reduced iron, thiamin mononitrate, riboflavin, folic acid], water, sugar,fermented wheat flour, salt, yeast, contains 2% or less of: arabic gum, corn syrup solids, wheat starch, ascorbic acid, enzymes, partially hydrogenated soybean oil, wheat gluten), ham-water added (ham, water and 2% or less of the following: salt, brown sugar, sodium citrate, sodium phosphate, sodium diacetate, sodium erythorbate, sodium nitrate), swiss cheese (pasturized part-skim milk, cheese culture,salt, enzymes).