Delftse Stadsbrouwerij De Koperen Kat is a craft brewery based in Delft, in the South Holland province of the Netherlands. Brewmaster Rolf Katte founded the brewery in 2011 with the ambition to breathe new life into Delft's rich brewing heritage, continuing a tradition of local beer culture that the city had long been known for. The name 'De Koperen Kat' — The Copper Cat — reflects both the warmth of artisan brewing and the playful character of the brand. The brewery focuses on crafting quality beers using the finest ingredients, producing a range of styles that celebrate Dutch craft beer culture. Every batch is brewed with care and attention, resulting in beers that are well-regarded among local enthusiasts and craft beer circles across the Netherlands. De Koperen Kat's beers are available in bottle and are distributed through specialist craft beer suppliers. The brewery has earned a following among beer lovers in Delft and beyond, appearing on platforms such as TripAdvisor among the notable brewery experiences in the Netherlands. Its connection to the city of Delft makes it a proud ambassador of local, independent brewing.