Burger:
1) Toppings were EXCELLENT as they were very fresh and proportionate. Mushrooms were melt in your mouth smooth. Onions were killer - tangy (balsamic) yet sweet (from caramelizing). Bacon was smoked and just crisp without being burnt. I might prefer a stronger cheese with all that is going on (hard to taste the cheddar). The sauce was very very good. I was also glad to see that toppings (for the most part) are free.
2) Beef was good too ... but a little well done since I like mine medium-rare. I should ask for it next time. But if I wanted well done, this would be it. It was not charred and still moist.
Sweet Potato Fries:
SOOOO GOOD! Sweet yet salty. Crispy yet fluffy. And all at the right amounts. I went back the following week for some fries to nimble on while walking the streets of Yorkville.
The service was prompt and courteous. It looks like you can sit 10 people in here comfortably. I ordered take-out so I can't go into too much detail here.