Enable JavaScript to run this app.
Skip to main content
OpenTable logo
  1. Home
  2. Canada
  3. Toronto / Ontario
  4. Southern Ontario
  5. Hamilton
Contemporary Canadian & From Scratch Cooking - Undefined, Hamilton, ON

Undefined

4.7
4.7
776 Reviews
CAN$31 to CAN$50
Bistro

Make a booking

2 people
19:00
Booked 16 times today
Experiences are available.
  • Good for special occasions
  • Great for creative cocktails
  • Hot spot
UnDefined has been changing the way people think about dining out in Hamilton. Voted one of Hamilton's best all-around restaurants for 2021, 2022, 2023, we are making a big impact on King William Street. With an evolving, seasonal and whimsical approach, our passion is what drives us every day. We strive to push the limits, and for our team, it is just what we love to do. We cook from scratch because that is just the way it should be. We love to challenge the way we all think about dining out.

We believe that there is no reason to put yourself in a box when going out with friends, so we do not do that here. Whether it is a night out with friends, an intimate dinner for two, or just something extraordinary, We are not afraid to take the familiar and turn it into something memorable. If it tastes good, we will put it on a plate, in a glass, or whatever. Our mantra is as simple as eat, drink, and enjoy!

Dining areas

Additional information

  • Dining style
    Casual Elegant
  • Price
    CAN$31 to CAN$50
  • Cuisines
    Bistro, Farm-to-table, Cocktail Bar
  • Hours of Operation
    Brunch Sat, Sun 10:00–15:00 Lunch Wed–Fri 11:30–16:00 Dinner Daily 16:00–22:00 Bar Fri, Sat 22:00–00:00
  • Phone number
    (905) 393-8343
  • Payment Options
    AMEX, Mastercard, Visa
  • Dress code
    Business Casual
  • Area
    Hamilton
  • Cross Street
    James Street North & King William
  • Parking details
    Street Parking
  • Public transit
    James Street North & King William
  • Additional
    Bar/Lounge, Beer, Chef's Table, Cocktails, Corkage Fee, Full Bar, Gender Neutral Restroom, Gluten-free Options, Happy Hour, Late Night, Non-Smoking, Patio/Outdoor Dining, Vegan, Weekend Brunch, Wine
Gift card

Gift card

Send gift cards instantly by email or print to present in person.

Send a gift card

Experiences

  • Brunch UnDefined!

    1 Oct 2024 - 31 Jan 2025
    Join us for an UnDefined brunch Saturdays & Sundays. UnDefined is know for its ever evolving menus and unique additions. Indulge in some of our favorites as well as a seasonal a la carte offerings to brunch without definition. Reservations highly recommended - No additional costs - Menu offering is a la carte
    Brunch UnDefined! photo

What 776 people are saying

Overall ratings and reviews

Reviews can only be made by diners who have eaten at this restaurant

4.7
4.7 based on recent ratings
  • 4.8Food
  • 4.8Service
  • 4.7Ambience
  • 4.5Value

NoiseModerate

Loved For

  • Toronto / Ontario

    Bistro

  • Southern Ontario

    Hot spot

Review summary

AI-generated from verified diner reviews
Undefined offers a remarkable dining experience with "excellent food" and "outstanding service." Patrons rave about the creative menu, featuring dishes like wild boar dumplings and hanger steak. The ambiance is both relaxing and vibrant, perfect for any occasion. Despite occasional slow service, the delightful flavors and attentive staff make it a must-visit.

776 Reviews
  1. Michael

    Toronto

    2 reviews

    5.0

    2 reviews

    Dined 6 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    The menu is innovative and delicious. Service was great. Highly recommend

    Is this helpful?

  2. RebeccaG

    Greater Boston

    6 reviews

    vip
    5.0

    6 reviews

    Dined 6 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 4
    Great server and fabulous brunch options. Well done

    Is this helpful?

  3. Jared

    Toronto

    2 reviews

    5.0

    2 reviews

    Dined 7 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    I ordered the Crispy Chili Squid and the CAD Prime Hanger Steak, and both dishes were outstanding in quality and flavor. The service was attentive and friendly, making the experience even better. The ambiance of the restaurant was excellent—perfect for a relaxing and enjoyable meal. Highly recommend!

    Is this helpful?

  4. Samantha

    Toronto

    2 reviews

    5.0

    2 reviews

    Dined on 11 November 2024

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Absolutely delicious food , great atmosphere , amazing service. It’s great to be able to see the chefs working away while enjoying an amazing mixed drink. We split everything we got and were not disappointed

    Is this helpful?

  5. Jermaine

    Toronto

    1 review

    5.0

    1 review

    Dined on 10 November 2024

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Great experience, Now I see why they have a 4.6 star rating on Google. We were skeptical at first but the experience was the best we've had in Hamilton and also the portion sizes, the food quality and quantity and the attentiveness of the wait staff was great on our visit. The menu options were pretty great as well. 100% recommend this spot and will return !! Thanks to Undefined for a great brunch experience.

    Is this helpful?

  6. Caterina

    Montreal

    1 review

    5.0

    1 review

    Dined on 8 November 2024

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    This was my first time at Undefined and everything we ordered was on point. We absolutely adored our server who was a complete blast the entire night and just added to the whole experience. Every dish we ordered was not only impeccably plated but also extremely satisfying and tasty. This is a must try.

    Is this helpful?

  7. OpenTable Diner

    Toronto

    1 review

    5.0

    1 review

    Dined on 2 November 2024

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    We have been to Undefined on many occasions for dinner and brunch. This is by far one of our favourite restaurants for a date night, going out with friends or a weekend brunch spot. The service is always top notch and the food is always beautifully plated and very thoughtful portions. One of the reasons we really like this restaurant is they change the menu. There are always new dishes to try and the cocktails are very tasty as well.

    Is this helpful?

  8. Adam

    Toronto

    2 reviews

    5.0

    2 reviews

    Dined on 28 October 2024

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    We had a wonderful experience for our anniversary dinner! We ordered PEI mussels, pork belly Dan Dan noodles, scallop risotto, and the sticky toffee pudding for dessert. Every dish was perfect and delicious, and our server was attentive and personable, he made us feel like the only customers in the restaurant, going above and beyond to make our meal experience wonderful. Our favorite restaurant by far in Hamilton and a must visit. I love that the menu rotates regularly so you can always try something new on repeat visits.

    Is this helpful?

  9. Sara

    Toronto

    1 review

    2.0

    1 review

    Dined on 28 October 2024

    1. Overall 2
    2. Food 2
    3. Service 4
    4. Ambience 3
    The dumpling appetizer was very good but my partner and I got the “to share” plate and it was not worth it at all. $98 for 4 potatoes, one small piece of steak to split between the two of us, some greens and bone marrow. The potatoes and bone marrow were good, but the greens were VERY cold and the steak was almost as cold.

    Is this helpful?

  10. Lisa

    Toronto

    2 reviews

    4.0

    2 reviews

    Dined on 27 October 2024

    1. Overall 4
    2. Food 5
    3. Service 3
    4. Ambience 4
    Was there for brunch with a table of 8. The servers were extremely friendly and lovely. The food was excellent. I will say the food took a very very long time to come out, however it was very delicious. Everyone at the table was pleased with their food. I will say there seems to be a lack of overall experience of the staff. Drink orders came out 2 at a time, mostly because of the trays being too small. Our server was putting 2 drinks on the tray and serving them then going back to the bar to get 2 more drinks etc. When it came time to pay we wanted separate bills. Usually a very easy ask these days. However we had to restate our orders individually to our server so that they could prepare the individual cheques. I would definitely return as these are small drawbacks to an otherwise lovely place to eat.

    Is this helpful?

FAQs

Undefined is rated 4.7 stars by 776 OpenTable diners.

Undefined does offer gift cards which you can purchase here.

Yes, you can generally book this restaurant by choosing the date, time and party size on OpenTable.

Make a booking

2 people
19:00
Booked 16 times today
Experiences are available.
Google Map for Undefined

35 King William St, Hamilton, ON L8R 1A1

Dining areas

Additional information

  • Cross Street
    James Street North & King William
  • Area
    Hamilton
  • Hours of Operation
    Brunch Sat, Sun 10:00–15:00 Lunch Wed–Fri 11:30–16:00 Dinner Daily 16:00–22:00 Bar Fri, Sat 22:00–00:00
  • Price
    CAN$31 to CAN$50
  • Cuisines
    Bistro, Farm-to-table, Cocktail Bar
  • Dining style
    Casual Elegant
  • Dress code
    Business Casual
  • Parking details
    Street Parking
  • Public transit
    James Street North & King William
  • Payment Options
    AMEX, Mastercard, Visa
  • Additional
    Bar/Lounge, Beer, Chef's Table, Cocktails, Corkage Fee, Full Bar, Gender Neutral Restroom, Gluten-free Options, Happy Hour, Late Night, Non-Smoking, Patio/Outdoor Dining, Vegan, Weekend Brunch, Wine
Gift card

Gift card

Send gift cards instantly by email or print to present in person.

Send a gift card
  • Privacy Policy
  • Terms of Use
  • Impressum
  • Cookies and Interest-Based Ads
  • Cookie Preferences
Copyright © 2024 OpenTable International Ltd. Alphabeta Building, 14-18 Finsbury Square, London EC2A 1AH - All rights reserved.
OpenTable is part of Booking Holdings, the world leader in online travel and related services.
Booking Logo
Priceline Logo
KAYAK Logo
Agoda Logo
OpenTable Logo