What exactly is "medium-high" temp on a broiler? My oven only has "broil." The temp can't be adjusted.

I agree with Monita. Your normal "broil" temp would be about 500F. For medium high I would set the oven dial to 400F. The reason for using the broiler is to put the char on with flame. Their are other ways to do this as well; an outdoor grill or even a blow torch.

My oven also only has "broil." Med high would mean to me - your oven rack should be on the next to highest level nearest the broiler flame (about 7-8" away)