One Fattened Calf Review: Popular Butter Beef Burgers In One-north |
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One Fattened Calf Review: Popular Butter Beef Burgers And Cheesy Loaded Fries In One-north

15th February 2024

One Fattened Calf has popular beef burgers at One-north 

one fattened calf wide angled shot

As someone who’s spent a good portion of my schooling life in the West, I like to think that I have relatively good knowledge of all the good eats in the area. News of One Fattened Calf’s opening in late 2021 flew right under my nose as it quietly opened its doors in a quiet part of Galaxis at One-north

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Food at One Fattened Calf

one fattened calf burgers

One Fattened Calf’s menu is small, but the quality of the nosh makes up for quantity. There are a total of five burgers you can choose from, and we decided to go for their three bestsellers. 

one fattened calf ofc cheeseburger intro shot

First of the three that we tried was the OFC Cheeseburger ($15), which we upgraded to a Burger Combo with an additional $4.90

one fattened calf ofc cheeseburger cross section

The 150g patty of premium New Zealand grass-fed beef that features in all their burgers is smashed on the grill and blowtorched before serving. This additional touch creates a wonderful char on the outside, while still maintaining the juiciness of the beef on the inside. 

Take a bite, and you’ll immediately be rewarded with a burst of buttery flavour from the tender, succulent patty.

one fattened calf potato buns

One Fattened Calf’s potato buns are made in-house, and I would say that the effort to bake their own buns pays off. Light and fluffy with a touch of sweetness, the burger buns balanced out the more intense flavours of the beef. 

one fattened calf ofc cheese fries

The burger combo comes with a serving of OFC Fries, which we upgraded to OFC Cheese Fries ($10.90) with a top-up of $2.50. If you prefer, you can choose to get a side of OFC Truffle Fries ($10.90) with an additional $2.50 instead. 

one fattened calf ofc cheese fries close up

If it weren’t for the additional dusting of paprika on top, I would’ve dismissed this as your usual cheese fries. The paprika added a mild kick of spice and general smokiness that, combined with the generous drenching of nacho cheese, made for an indulgent side that I couldn’t stop reaching for. 

one fattened calf ofc golden lime slushie intro shot

Each burger combo also comes with a drink of your choice, and of course, we had to try their OFC Golden Lime Slushie ($4.90). It tastes similar to calamansi juice, and I found it to be more sweet than sour. Nonetheless, it was a refreshing addition to our hefty meal. 

one fattened calf ofc butterburger intro shot

Next, we tried the OFC ButterBurger ($15). Its only difference from the normal OFC Burger is the addition of two thick slabs of cold grass-fed butter, similar to the ones you have in your kaya toast at Ya Kun. 

one fattened calf ofc butterburger interaction shot

I applaud the owners for their decision to add the butter, because it did wonders to elevate the flavours of the beef. 

I loved how the cold butter immediately starts to melt on the hot patty, creating this luscious, fat-ladened sauce that coats the meat. In the same way that you would baste a steak with butter for extra flavour, the melting butter lent a creamy finish to the burger.

It’s worth noting that this is the only burger from One Fattened Calf that is not available for delivery, so you will have to haul yourself down to the store to try it for yourself. 

one fattened calf ofc goldburger cross section

Last but not least, we tried the OFC GoldBurger ($18), which is loaded with pulled beef brisket on top of their standard affair of beef patty, onions, tomatoes and pickles.  

one fattened calf pulled beef brisket interaction shot

At first, I feared that beef on beef would be too overwhelming, but it actually contrasted the tender beef patty with some chewiness, while adding smoky notes too. 

one fattened calf pickles

As mentioned earlier, each burger comes with its own share of charred onions, red onions, tomatoes, and house-made pickles, but I’d like to shine the spotlight on the pickles. I’m the type to pick the pickles out of my burger because I’m not a fan of the taste, but I found the ones at One Fattened Calf delightfully crunchy, without the unpleasant sourish and briny taste that I dislike. 

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Ambience at One Fattened Calf 

one fattened calf storefront

Galaxis is directly connected to One-north MRT Station, so getting here is definitely not a problem. Their current space is quite limited, seating roughly 15 people at any given time. The seats fill up pretty quickly during lunch hour thanks to office workers from the buildings nearby, so do head down early if you’re looking to secure a seat. 

one fattened calf prep shot

Their kitchen has an open concept, so you can watch as your burger is grilled to perfection and assembled upon order, before it lands on your tray. 

The verdict

one fattened calf verdict shot

It’s safe to say that One Fattened Calf has beyond impressed me with their hearty burgers. For the quality you’re getting, I would consider the grub here value-for-money, and I am definitely willing to brave the long lunchtime queues if it means I get to enjoy their burgers again. 

If you’re looking for more burger joints, check out our list of 15 best burgers in Singapore at all budgets. For other halal burgers, check out our Burgs by Project Warung review for burgers below $12 from this Muslim-owned joint. 

Address: 1 Fusionopolis Place, #01-31, Galaxis, Singapore 138522
Opening hours: Mon-Sat 11am to 3pm, 5pm to 8pm
One Fattened Calf is not a halal-certified eatery but uses no pork or lard.

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Photos taken by Zu Yi Kong.
This is an independent review by

One Fattened Calf Review: Popular Butter Beef Burgers And Cheesy Loaded Fries In one-north
  • 8.5/10
    One Fattened Calf Review: Popular Butter Beef Burgers And Cheesy Loaded Fries In One-north - 8.5/10


– Tasty beef patties
– ButterBurger was unique and delicious

– Few seats available

Recommended dishes: OFC ButterBurger ($15), OFC GoldBurger ($18)

Opening hours: Mon-Sat 11am to 3pm, 5pm to 8pm

Address: 1 Fusionopolis Place, #01-31, Galaxis, Singapore 138522

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