While the amounts listed here are designed to give you an idea of the proportions to use, the only way to really make the feared hamasarosa is to take all the ingredients and throw them together in a container big enough to hold everything.
Warning: this drink is named after a terrorist group for a reason. It tends to go off like a suicide bomb, with predictable results. It bearly tastes like there's alcohol in it, but has an alcohol content closer to a shot then a mixed drink. Imagine sucking on a Mike's Limeade that has the same potency as a gin and tonic, and you get the idea. As such, it can get on top of even the most hardened drinker. Do not make this drink if you have anything to do early the next day, do not want to spend the night getting into fights with your friends, or do not want to end up sleeping in a parking lot.