by Stephen D » Sun May 16, 2010 12:10 pm
Well, kind-of. You want the ingredients to be as close to the same temperature as possible. This keeps the protiens in the cheese from seizing and becoming grainy. So shave the cheese up, allow it to rest at room temp for a bit. Make your broth and remove it from the direct heat and allow it too cool for a bit- but not too cool so that it won't melt the cheese. Add a bit at a time, stirring well- kinda like making buerre blanc. If it doesn't melt the cheese, place the broth back on at a low temp, just to get it where it will do its thing!
Also, did you get the same kind of cheese you used to do it with before? Many processed cheeses have additives that inhibit this process. I had a sharp cheddar pull that one on me a while back...