"And sorry, done properly one uses a stainless steel pan, low heat and one butters both sides of the bread, NOT the pan, two 1/8" thick slices of *real* cheddar and some cracked black pepper."
You got the pan and the butter correct, but CHEDDAR??? Nah. A real grilled cheese is made with AMERICAN... :) Cheddar is only to be used if the American was consumed before next shopping day. My personal favorite is a nice habanero cheese. Brie can do in a pinch, but it's too mild. Deeply aged Bleu Cheese is absolutely wonderful! There is one Bleu Cheese I've had shipped from Ireland that is quite yummy.