Looking up the recipe I get all kinds of differences everything from 3 ounces of ginger beer to 10 ounces of ginger beer to what all seem to agree on 2 ounces of rum. Some recipes call for lots of ice, others not so much. The Goslings can says to put the ginger beer in first over the ice then float the rum on top. Most other recipes say to put the rum in first and mix it up with the ginger beer. How can such a simple drink recipe have so many conflicting methods of manufacture? So who on this forum is a dark and stormy expert and what is the best way to make one?