For over a decade, a local taste of German food and culture was a fleeting experience found only on weekends in October at the Deutsches Haus. Although no one can deny the timelessness of the Chicken Dance, native Berliner Sven Vorkauf set out five years ago to offer a taste of his home country without the musical flair, serving up sausages at festivals around town under the name Bratz Y’all—an apt title connoting both his passion for his indigenous cuisine and his affinity for his adopted ho...