How are Wendy's burgers never frozen but always fresh?

Every Wendy's gets a delivery (including beef) on Monday, Wednesday, and Friday (not every day but not just once every week). The meat that Wendy's gets is kept refrigerated throughout its transportation, well below the temperature at which beef will spoil. Keeping it very cold keeps bacteria levels down and customers safe. A fresh burger tastes better than a frozen burger anyway, so that is why they use only fresh beef.