Take one large empty pop bottle with a screw top.
Break into small pieces about 6 hard spanish sticks (liquorice..sp) and place in bottle.
Fill bottle with tap water.
Place bottle in a dark place (usually in cupboard under stairs)
Leave there for about 3 days.
Drink and enjoy.....Yummy at the time but sounds revolting now.
Apparently I was thinking of Spanish Fly. Buy it in any good sex shop, hide it in a dark place (with you fermenting Spanish Juice), slip a few drops in your boyfriend's drink and, hey presto ...
... barber's pole !!!
(then you spend all night throwing up in the bathroom after drinking some Spanish Juice you found under the stairs)