Jonathan Adler Brass Squirrel Bottle Opener, Gold Each piece in our collection of brass bibelots starts its journey in our soho Studio where jonathan and his team sculpt the Original model. Next, it's cast in sold brass and polished by hand. If desired, use a microfiber cloth to buff out fingerprints. If you have no patience for patina, use a brass polish. To clean, buff out fingerprints and surface scratches with brass polish and microfiber cloth