Brauerei Schlösser is a German brewery historically associated with the city of Düsseldorf, one of Germany's most celebrated brewing regions and the traditional home of Altbier. The brewery is among the established names in the Altbier tradition, a brewing style deeply rooted in the Rhine region with centuries of local heritage behind it. Schlösser is best known for its Altbier, a top-fermented, copper-coloured ale that is defined by its balanced bitterness, malt-forward character and clean, dry finish. Altbier — literally meaning "old beer" — refers to the older, top-fermentation brewing method that predates the widespread adoption of bottom-fermented lager styles. Schlösser Alt represents a classic interpretation of this regional style, brewed to reflect the time-honoured traditions of Düsseldorf brewing culture. The Schlösser Alt has appeared in references to the broader Altbier market alongside other established Düsseldorf breweries, confirming its standing as a recognised name within this niche but enduring German beer style. Collectors of brewery memorabilia will also recognise the Schlösser name through vintage breweriana, including branded beer coasters that reflect the brewery's long presence in German beer culture.