“ Fast, cheap, and incredible smash burgers! Exceptionally good on a particularly cold day! Get the special with the hatch chiles!! Warms you up inside and out! The meat is caramelized to perfection and so juicy! No seating, so prepare to eat outside. ”

“ Double knockout burger was delicious. Perfect for a light meal and a great deal at $9. I wish they had seating! Waaaaaay better than 7th Street! ”

“ I haven't been this impressed by a burger in ages! Immediately after finishing my first burger, I already wanted another one. I've tried the bacon one and the truffle sauce one and loved both. Comes out incredibly hot, the patties are always generously peeking out from the bun so you'll get to taste the seared edges first, followed by how cheesy and juicy your next bite is. It's greasy, but not 7th Street Burger greasy. ”

“ I had the best experience at KO Burger. My friend insisted that we go here. I'm not a huge burger person. However, the minute I ordered the burger reading the description I knew I was excited to try it and had high hopes. This defintely lived up to my expectations every bite was delightful - the combination of the cheese, the truffle sauce, and the potato bun were perfection. I can't wait to go back to New York to go to KO burger!! ”

“ Neighborhood spot with a good smashburger KNOCKOUT BURGER (Potato Roll, Smashed Burger, American Cheese, Onions, K.O. Sauce, Mustard, Pickles, Pickled Jalapenos) - Solid Smashburger with a bit of a kick from the pickled jalapenos CROSS-CUT FRIES - The fries were overly fried. It feels like the fries were previously fried and then refried when we ordered, so it was too crunchy ”

“ Another addition to the smash burger craze/ This one is a good one and while in my experience this version did not have as cripsy of an edge as some of the other burger variations I've had on the market, this was still a good sandwich. They also do offer a few burgers that include some fun toppings including a bacon burger and truffle burger, I tried the Knockout burger which is their best seller. This is a classic take on a potato bun, American cheese, pickles, onions, mustard and their signature KO sauce. The crinkle fries were very yummy however I did find both sauces I got for dipping (jalapeno ranch and comeback sauce) to be on the mild-er side in terms of flavor. I don't know if i'd make another special trip to try it but if you're in the area and craving a smashburger this is your best bet. ”

“ This spot lives up to the name because this burger gave me the one-two punch in presentation and flavor. Most especially in flavor because I wanted to go back for Round 2 by having another burger. Smashburgers have been trending all over New York City but selective few are truly bring that fínese and stand out for more than just smashing a patty. And K.O. Burger was worth the walking journey to find it since it is kinda tucked away but thankfully its vibrant yellow store front makes it easy to spot it. They don't have an open window so do wave to indicate to the cashier you are ready to order. Once your order is ready for pick-up, they have outdoor seating. But if you want to sit down and eat your burger, there is a park nearby as well. I ordered the 'I'd Hit That' with double patty. The name for this burger was so punny (pun+funny). It has Black Truffle Mayo which is an absolute plus for me and two types of onions which are two more pluses. Another plus is the space design and mural for photo op with your burger. Also, you can edit your order meaning if there's an item you don't like in the burger listed such as onions, pickle, etc, just let the cashier know so they can inform the cook. This burger spot is a must-see and must-try for burger lovers, foodies, and anyone who walks by and suddenly in a mood for a burger ”

“ This place is soooo good. The service is super fast and the food is absolutely amazing. My boyfriend got the hatch green chili burger and I got the I'd hit that burger. Both were really good, so good we forgot to take a picture. We wished the hatch burger was a little bit spicier and had more of the yuzu mayo, but overall still amazing. Both of us agreed that I'd hit that was definitely the better burger. The truffle oil was flavorful and the caramelized onions added to the sweet savory flavor. The fries and our bottled soda just completed the meal! Definitely need to go back! ”

“ Small kiosk on the corner of Eldridge and Division St, barely any table seating. Regular burger (triple) was good. Hatch chile wasn't anything that special. Loaded fries were good. Would go back to try the other burgers. ”