Chicago Style Hot Dog

I grew up in the Chicago area so it's hard for me to admit that I did not learn to appreciate a good Chicago style hot dog until I moved away from the area.  Once you've had a bad hot dog, you know when you've had a good hot dog and the Chicago style hot dog at Portillo's is one of my favorite.  For those of you who aren't familiar with what a Chicago style hot dog is, the first rule is that you CANNOT put ketchup on it.  In fact, most authentic places will curse you under their breath if you happen to make the faux pas of requesting ketchup.  Lest you think that there's no flavor if there's no ketchup, here's what's typically included on a Chicago style hot dog: mustard, relish, freshly chopped onions, sliced red ripe tomatoes, kosher pickle and sport peppers on a poppy seed bun.  Needless to say, there's plenty to enjoy in every bite and so I make it a point to get a Portillo's hot dog when I go home to visit.  Here's a picture from a recent trip:

My mouth is watering already...