Black and tan

Black and Tan is a cocktail made from equal parts lager beer and stout, especially Guinness.

The name is an allusion to the Black and Tans, soldiers sent to Ireland by Great Britain in the 1920s to suppress Sinn Féin revolutionaries agitating for Irish independence.

The most common Black and Tan in the United States uses Guinness Stout and Bass Ale. The Guinness (or other stout) is "layered" on top of the Bass (or other lighter-colored beer). This is accomplished by first halfway filling the glass with Bass, then adding Guinness. The Guinness should be poured slowly over an upside-down tablespoon placed over the glass; this disperses the stout beer and helps to create the desired layering effect in the finished drink.

Combine Guinness and Harp lager (instead of Bass) to create a "Half and Half."