"Having lived in Chicago previously, I was thrilled to discover this, with their Chicago Style hot dogs. They're just as I remember them, as is the Maxwell Street polish sausage. The onion rings are probably my favorite of any place, as the batter is crunchy yet light, and it doesn't overpower the onions. The portions, when it comes to fries and onion rings and drinks, are quite large. I could do with smaller drink size availability. The chocolate cake is practically decadent, and they will give you a free piece on your birthday if you register your birth date. The atmosphere is really fun and upbeat, with a lot of old photos that include the first version of Portillo's way back when, and vintage signs and other memorabilia on the wall. Service is great. I don't think I've ever eaten in there when someone didn't come by and check to make sure it's all okay. From the counter people that take the orders to the people who call out your order in rhyme when it's ready, they've all been friendly when I've been in there. It's very clean. It's kid-friendly, and parking in the lot in front is plentiful. Also there is a really nice outdoor patio to sit at during good weather."