This weekend, we gave Than half a grilled cheese sandwhich, and not only did he not have an allergic reaction, but he enjoyed it! Wahoo!
(For those that don't remember, Than had an allergic reaction to pre-sliced sandwich cheese in Feb 2011. It was an anaphylatic reaction. He was taken from the InstaCare center (which we ran to because it was the closest to our house) to the children's hospital by ambulance and kept in the hospital overnight. Later, he had a SPT by an allergist that reaveled he was allergic to cow's milk and eggs.)
We have been slowly and safely giving him cheese to "test" what he can safely eat. So far, he can have goldfish crackers (the original kind made with real cheddar, have no tried any other kinds yet), Kirkland shredded mozarella, and Kirkland block cheddar. We tried cheetos, and suspected a reaction so we won't be trying those again. We also have been trying cow's milk and eggs, but he's still reacting to those (rash and mild wheezy, but treatable with elimination and benedryl).
The grilled cheese is such a wonderful thing! This kid is so picky when it comes to food, I am thrilled to have another food he will eat. AND this continues the path of safely and slowly testing other cheeses.