@Ruth Good question. I don't really know but I did a little poking around on the internet and here's what it boils down to (ha, ha, ha): to mull describes the process of heating an alcohol up and adding a variety of spices to it. Thus you can have mulled wine, mulled beer (wassail), mulled port and the list goes on and on. The combination of spices, fruit and other additions seems up to the individual making the drink. So I guess that I shouldn't worry about the recipe too much and just make it to taste. The important part seems to be this: don't boil the wine.