Gatz Altbier from Krefeld exemplifies the Düsseldorf altbier tradition—a copper-coloured ale that defines itself through top fermentation, a practice that distinguished these beers from the bottom-fermenting lagers dominating other German regions. The beer presents a full body with grainy malt backbone, subtle caramel notes, and a balanced noble hop presence. Clean and refined, it carries the characteristic yeast character of open-fermented ales, finishing with a smooth, medium bitterness and toasted undertones.