A snakebite is an alcoholic drink made with equal parts lager and cider. If a dash of blackcurrant cordial is added, it is known as a "Snakebite and Black", or rarely, a "Diesel". It was first popularised in the UK in the 1980s.
Availability in the UK
A snakebite is typically served in a pint glass.
de:Apfelschaumwein#Mischgetränke