Tucked in the back of the high-end home-decor and gourmet-kitchen store Ganz Klasse, which offers handcrafted wooden cutting boards, table linens, and porcelain pieces, Schocolat sells fine handcrafted chocolates in flavors like Raspberry Crown, with raspberry puree and Chambord; Earl Grey, with double bergamot tea; and Golden Cinnamon, with milk chocolate ganache, gold flecks, and Goldschläger...