<p>Marianne Koos has owned a convenience shop in the Alexanderplatz subway station ever since 1984, when her home and business lay east of the Berlin Wall. Her wares have scarcely changed since thenshe continues to sell Communist-era shampoos, household cleaners, and Ersatzkaffee (imitation coffee made of malted grains and charred vegetables). These aren't vintage goods, however; the companies that manufactured these products shut down after the fall of the Wall in 1989 but soon resumed production due to popular demand.</p>
