100% AMERICAN WAGYU SMASH BURGERS.
Handcrafted from never-frozen American Wagyu beef with crispy caramelized smash edges, signature Wild Style sauce, loaded Rebel & Bulgogi fries, and complimentary fresh drip coffee.
The OG Smash
Wagyu, American Cheese, Wild Style
One Twenty-Three
100% American Wagyu
100% American Wagyu
Never frozen, high-marbled real beef smashed hard on flat-tops for maximum caramelized crust and juicy flavor.
Wild Style Spread
Our signature in-house burger spread that coats grilled onions and pickles for an unforgettable craveable bite.
Specialty Fries & Tots
Famous Rebel Fries with Wagyu patties & melted cheese, and savory Bulgogi Tots with spicy mayo & green onions.
Free Community Coffee
Warm hospitality in every visit. Fresh hot drip coffee is always brewing free for our Upland neighbors and guests.
BUILT ON WAGYU, CRAFT & COMMUNITY
At One Twenty-Three Burger Co., we set out to redefine what a neighborhood burger spot should feel and taste like. We use 100% American Wagyu beef — never frozen, always real beef. Every patty is smashed hard to order for crisp caramelized edges, paired with toasted brioche buns and signature Wild Style spread.
Located on Mountain Avenue in Upland, California, we're proud to be a family and community-driven gathering place where everyone is welcomed with warmth and a hot cup of coffee.
"But seek first the kingdom of God…" — Matthew 6:33. The verse our family lives by, and the way we run this shop: faith and family first, good food for our Upland neighbors, and a hot cup of coffee for anyone who walks through the door.
100% Wagyu Beef
Never frozen real beef smashed to perfection.
Wild Style Sauce
Signature spread crafted in-house daily.
Free Hot Coffee
Hospitality isn't an upsell — it's on the house.
ALL ITEMS SERVED À LA CARTE
100% AMERICAN WAGYU • NEVER FROZEN • WE USE REAL BEEF
TOP PICKS
The OG Smash
100% American WagyuAmerican Wagyu smashed patty, American cheese, grilled onion, pickle, wild style sauce (spread) on a butter-toasted brioche bun.
The Western
100% American WagyuAmerican Wagyu smashed patty, American cheese, crispy bacon, golden crunchy onion rings, choice of BBQ sauce.
Rebel Fries
Crispy crinkle-cut fries topped with American Wagyu patty, shredded cheddar jack cheese, melted American cheese, grilled onion, wild style sauce (spread).
FULL CRAFT MENU
Every burger is made with 100% American Wagyu beef, grilled hot with crispy caramelized edges, melty cheeses, grilled toppings, and our signature Wild Style spread.
The OG Smash
100% American WagyuAmerican Wagyu smashed patty, American cheese, grilled onion, pickle, wild style sauce (spread) on a butter-toasted brioche bun.
The Spicy Smash
100% American WagyuAmerican Wagyu smashed patty, Pepper Jack cheese, grilled onion, grilled jalapeño, pickle, wild style sauce (spread).
The Jalapeño Bacon Burger
100% American WagyuAmerican Wagyu smashed patty, Pepper Jack cheese, grilled jalapeño, crispy bacon, wild style sauce (spread).
The Western
100% American WagyuAmerican Wagyu smashed patty, American cheese, crispy bacon, golden crunchy onion rings, choice of BBQ sauce.
The Chef's Special
100% American WagyuAmerican Wagyu smashed patty, American cheese, grilled onion, grilled jalapeño, pickle, bacon, fried egg, spicy mayo.
The Heartbreaker
100% American WagyuDouble American Wagyu patty, double American cheese, double bacon on a toasted brioche bun.
Rebel Fries
Crispy crinkle-cut fries topped with American Wagyu patty, shredded cheddar jack cheese, melted American cheese, grilled onion, wild style sauce (spread).
Rebel Tots
Golden crispy tater tots smothered with an American Wagyu patty, shredded cheddar jack cheese, melted American cheese, grilled onion, wild style sauce (spread).
Bulgogi Fries
Crispy crinkle fries loaded with shredded cheddar jack cheese, marinated ground beef bulgogi, spicy mayo, fresh green onion, toasted sesame seeds.
Bulgogi Tots
Crunchy golden tots topped with shredded cheddar jack cheese, savory marinated ground beef bulgogi, spicy mayo, green onion, and toasted sesame seeds.
Crinkle-Cut Fries
Classic deep golden crinkle-cut fries fried crisp to order with light signature seasoning.
Tater Tots
Crispy bite-sized potato crowns fried golden brown and served steaming hot.
Onion Rings
Thick sweet onion rings dipped in crunchy batter and fried to golden perfection.
Grilled Cheese
Melted American cheese griddled golden on a toasted brioche burger bun.
Coke
Ice cold classic Coca-Cola can.
Coke Zero
Ice cold zero sugar Coca-Cola can.
Sprite
Crisp lemon-lime refreshment.
Bottled Water
Chilled purified bottled water.
Ready to Order in Upland?
Order easily on self-service touchscreen kiosks inside 507 N Mountain Ave or call ahead for fast counter pickup. Hot fresh drip coffee is always on the house!
A GLIMPSE OF 123 BURGER CO.
Sizzling smash crusts, loaded Rebel Fries, crunchy tots, and our warm Upland dining room.
The OG Smash Wagyu ($11.75)
American cheese, grilled onion, pickle & signature wild style sauce on toasted brioche.
Loaded Rebel & Bulgogi Fries
Smothered in Wagyu patty or marinated bulgogi with melted cheeses & sauces.
The Western & Jalapeño Bacon
Crispy bacon, thick onion rings, grilled jalapeños & house BBQ.
Warm Upland Dining Room
Touchscreen self-ordering, cozy seating & free fresh drip coffee.
LOVED BY UPLAND FOODIES
See what our guests say about our 100% Wagyu smash burgers, loaded sides, and service.
"Today was the official start of the Autumn season! What better way to kick it off then to get the OG smash Wagyu burger! I ordered it with pepper jack cheese. I also got the crinkle cut fries light seasoning. Incredible flavor, smash crust was on point!"
Raymond Groves
Local Guide · 101 reviews
"I'm hooked! 🔥🍔 The OG Smash and the Rebel Tots were phenomenal! The Wagyu burger has to be one of the best I've ever had in the Inland Empire. The wild style sauce ties it all together. Absolute MUST-TRY in Upland!"
Khanh
Verified Dine-in Customer
"Self-service kiosk makes ordering effortless. The smash burgers are generous, 100% Wagyu quality is obvious from the first bite, and the free coffee bar is such a thoughtful community touch."
Annika
Verified Local Review
"Bulgogi Fries and The Chef's Special with the fried egg and spicy mayo are unbelievable. Smashed crispy edges on the Wagyu patty and pillowy brioche bun. 5 stars all day."
Marcus T.
Inland Empire Foodie
FIND US & STORE HOURS
Stop by for lunch, dinner, or quick takeout at our Mountain Avenue location.
Address & Contact
One Twenty-Three Burger Co.
507 N Mountain Ave
Upland, CA 91786
Weekly Operating Hours
House Tradition: Free freshly brewed hot drip coffee is always available on our counter for every guest!
How to Order When You Arrive
Step inside 507 N Mountain Ave, step up to our touchscreen kiosks, select your favorite smash burger (The OG Smash, The Western, or The Heartbreaker), add Rebel Fries or Bulgogi Tots, grab a seat, and enjoy your meal served piping hot!
GET IN TOUCH
Questions about catering, group orders, or just want to tell us how much you loved your Wagyu burger? Drop us a note!
Restaurant Info
Large / Catering Orders
Planning a family gathering or office lunch in Upland? Call our store directly at least 2 hours in advance so our grill team can prep fresh Wagyu patties for your crew!READY TO TASTE REAL WAGYU?
100% American Wagyu beef • Never frozen • All items served à la carte. Open daily in Upland!