Witches' Brew

                               

500 ml (5 parts) Midori
800 ml (8 parts) vodka
2 litres (20 parts) ginger ale
200 ml (2 parts) water

(or)

Witches' Brew (2000)

(this one pretty much fills a 12-quart cauldron)

four 48 oz cans pineapple juice
one 96 oz bottle orange juice
four 2 litre bottles lemon-lime soda
one 1.75 litre bottle vodka
one 1.75 litre bottle rum

All measurements are approximate. Adjust to your own taste.
Mix well. Pour into your cauldron, preferably with chunks of dry ice to create the bubbling steam effect.
(Be careful NOT to drink or eat or in any way come in direct contact with skin with any chunks of dry ice -
you can get burned by the extreme cold!)