Having lived in Illinois, I'm so so so happy that they have Portillo's in Scottsdale. Best things to get when you're there: Italian beef with sweet peppers, Italian sausage, (if both the Italian beef and sausage sound good to you, don't pick between them, just get the Combo!), the Chicago Style dog. However, you absolutely cannot leave Portillo's without trying their famous chocolate cake. If you're on the go, definitely get the chocolate cake shake.