Backslash Burger (Formerly Fifty Fifty)
$ • Food Trucks, Burgers
Hours:
526 N Market St, Frederick
(301) 300-2562
About Backslash Burger (Formerly Fifty Fifty)
Customers' Favorites
Fried Chicken Sandwich Build Your Own
Smash Burger with Caramelized Onions
Old Bay French Fries with Dip
Fifty Fifty Build Your Own
Beer Battered Onion Rings
She's My Cherry Burger
I Can't Feel My Face
Single Patty Burger
Millions of Peaches
Fifty Fifty Burger
Recent Reviews
Menu
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Hours
| Monday | 11AM - 10PM |
| Tuesday | 11AM - 10PM |
| Wednesday | 11AM - 10PM |
| Thursday | 11AM - 10PM |
| Friday | 11AM - 10PM |
| Saturday | 11AM - 10PM |
| Sunday | 11AM - 7PM |
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Backslash Burger (Formerly Fifty Fifty) offers delicious burgers in Frederick, located in the back of Olde Mother Brewery. The impossible plant burger is excellent, and the smash burgers are full of flavor, juicy, and perfectly cooked. Fries and onion rings are delicious; ask for extra crispy. Sweet potato fries are exceptionally crispy and seasoned (with cinnamon sugar), served with a side of in-house blueberry ketchup or a blueberry sauce that is so fire. The staff are courteous, incredibly friendly, and very kind. The vibe is super chill and relaxed, with ample seating and a large seating area with picnic tables. It is connected to Olde Mother Brewery for a local beer and burger, with easy access to the brewpub and an accessible parking lot. Great for families, with fast service and a best burger in the DMV rating.