"we can make black and tans"
A Black and Tan
drink is usually a half-and-half mixture of a stout, often Guinness, and a lighter ale such as a Pale Ale or lager. The lager is poured into the bottom half of a pint glass, and then the stout is added by pouring it slowly over the back of a tablespoon to achieve a layered effect. The drink Francis is intending to make, with champagne and stout, is more often called a Black Velvet