Measure 9 tablespoons of cocoa, 1/4 cup butter and 1/2 cup water into a saucepan. Watch, stirring occasionally until the butter is melted. Stir in 1 cup sugar, 3 tablespoons corn syrup (If you don't use corn syrup, add 1/4 cup brown sugar instead.) and 1/4 teaspoon salt. Bring this to a boil, stirring until the sugar is dissolved. Cook at a gentle boil for 8 minutes. Cool slightly before pouring over your ice cream. At least blow on the spoonful before you put it in your mouth. You don't want a scorched tongue!
That's it! A word about the corn syrup. It will make the sauce glossier and a bit sweeter than the brown sugar but I've made it either way and let me tell you, it's divine. See, from a few staple ingredients that are in your pantry you can make something that will make a grown man cry. Believe me, I seen this happen more than once!