
Welcome to Fattso Burger
"Here at Fattso, not only do we care about the quality of our food, we care about customer satisfaction, we care about the environment and having as minimal impact as possible, while providing a quality and memorable service" - The Fattso Team
Find our signature smashed burgers at The Stag & Hounds in Old Market and The Sportsman in Bishopston.
At Fattso, we’re not just flipping patties, we’re flipping the script on what fast food can be. We believe quality isn’t an option—it’s the foundation. That’s why every burger we make is packed with high-quality ingredients and unmatched attention to detail. We care about more than just what’s on the plate, too. From prioritising customer satisfaction to making sure our meat is responsibly sourced and the best in the South West and offering a range of vegan and vegetarian options. In fact, our Mi-So Hungry burger, featuring a Redefine Meat patty, won the Vegan Burger of the Year Award at the National Burger Awards.

There's a new Mac in Town
At the heart of Fattso is our founder, Hamish Macdonald. Bristol born and bred, with a background in five-star Swiss fine dining, Hamish brought his skills back home to create burgers that are anything but ordinary. His ability to capture flavor has earned him national recognition.
Hamish's creations go beyond the basics. From his homemade pickled jalapeno mayo to brown butter confit onions and premium cheeses like Ogleshield, every element comes together to create something truly special. It’s burgers done differently, and the results speak for themselves.
What the People are Saying
Don’t just take our word for it. Here’s what our customers have to say about Fattso:
"Hands down one of the best burgers I’ve had, it tastes like a high-end restaurant! 100% recommend. 100% coming back." - Facebook Review
"Fattso burgers are the absolutely best burgers in town. We had the Royale (top 3 burger in UK) and vote for Pedro (spicy burger 🌶️). And a side of spicy fries.
The burgers were tasty, moist, cheesy and the bread was perfect! The fries were spicy but not too much and so different to what you normally get. We loved and will be back!” - Google Reviewer
"Great burgers, lovely service and nice atmosphere. We have been here a few times now and they have been consistently good, one of the best ones in Bristol" - Google Reviewer
"That is a Tasty Burger"
We’re not here to give you something you’ve seen a hundred times before. With us, it’s about doing things better—and that applies to every offering. Whether it’s the perfect brine for our pickles, the sauces we create, or our award winning combinations, we’re always pushing what’s possible in the kitchen.
Fattso is proudly Bristol born and "bread". From our ingredients to the areas we call home, we’re inspired by this amazing city. Whether you’re stopping by Old Market or Bishopston, our mission is great food and a place you’ll want to return to again and again. We’ve got a flavour for every mood and we believe every detail matters.
