This lucky 2-in-1 clover can pour the perfect Black & Tan beer. Made from 100% stainless steel, this item will keep those great beers flowing for many years. What is a Black & Tan? Black & Tan, or 'half and half', is simply a blend of a light or pale ale beer served with a layer of dark porter or stout beer 'floated' on top. The dramatic appearance and the flavors complement each other.