1/2 pint lager
1/2 pint cider
1 dash blackcurrant cordial

Pour the lager first then add the blackcurrant cordial. Top up with the cider. The colour sholud be very dark approaching the colour of Guiness. Drink several of these and watch the room spin around! N.B. Only the cheapest lager and cider from the students union bar should be used.