Why is there an extra slice of cheese added to my loaf?

Every loaf of Tillamook Cheese is cut from a 40-pound block of cheese. After being cut from this original block, each loaf is weighed to make sure it fits in its appropriate loaf size category (an 8-ounce, 10-ounce, 1-pound, 2-pound, 2.5 pound, or 5-pound loaf). If a loaf is overweight, cheese is sliced off. If a loaf is underweight, a slice of cheese is added to increase its weight – this is the “extra” slice that you found in your loaf. Usually this extra slice adheres back to the loaf over time, but occasionally it is still visible when the cheese is purchased.