What is the term *Pfand* used for at the Heidelberg Christmas Market beverage stalls?

The deposit paid for the ceramic mug used to serve the hot beverage

The *Pfand* is a crucial practical detail for first-time visitors navigating the beverage stands at the market. When a visitor purchases a hot drink, such as Glühwein, served in one of the market's characteristic ceramic mugs, they are required to pay an initial deposit, known as the *Pfand*, in addition to the price of the drink itself. This deposit serves as collateral for the mug. If the visitor returns the mug to the vendor, they receive the deposited money back. This system encourages visitors to return the reusable mugs rather than discarding them, offering a small nod toward sustainability while allowing vendors to cycle their unique serving ware efficiently. If a visitor intends to try multiple drinks, asking about refills in the same mug can help save money by avoiding multiple Pfand payments.