Boulder’s Pearl Street welcomes a regenerative beef revolution from Half Eaten Cookie Hospitality, the team behind upscale spots Oak at Fourteenth and Corrida.
Every patty comes from 100% local, organic, regeneratively-raised beef sourced through their own Colorado Cattle Company—proving premium doesn’t require pretension or steakhouse prices.
Burgers run $8 to $14 depending on size and toppings, making sustainable eating accessible rather than exclusive. 🍔
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The first standalone location opened in March 2025 after starting as a kiosk at Sanitas Brewing Company’s Englewood location in June 2023. The whole-animal butchery approach means prime cuts go to Corrida for steaks while ground beef lands at C Burger—maximizing sustainability while minimizing waste.
The all-Colorado beverage program features local beers, spirits, and craft cocktails like the C Margarita and CCC Ranch Water.
The C Burger: Colorado Pride Between Two Buns
This signature creation features American cheese, smoked bacon, crispy jalapeños, and green chili sauce on a perfectly smashed patty. Reddit users call it “among the finest burgers” they’ve ever tasted, with doubles running just $11 to $13.50.
The crispy jalapeños deliver heat without overwhelming, while green chili sauce brings that essential Colorado flavor profile. One percent of sales from this burger gets donated to Zero Foodprint, a nonprofit funding regenerative farming projects—meaning every bite supports the cause. Instagram reviewers praise the melted cheese, smoked bacon, and crispy jalapeños combination as unbeatable.
The smash burger technique creates those crispy edges that burger enthusiasts crave, while the regenerative beef provides deeper, more complex flavors than conventional patties.
S2 Burger: Nostalgic Mushroom Magic
The S2 Burger comes piled high with Swiss American cheese and tallow-mushroom sauce that food bloggers describe as “super nostalgic”. That mushroom gravy made with beef tallow takes this burger from good to memorable.
The caramelized onion sauce adds extra depth, creating layers of umami that complement the quality beef beautifully. The Swiss American cheese melts into every crevice while the tallow-mushroom sauce provides richness that feels indulgent without being heavy.
Reviewers specifically call out the mushroom and cheese combination as “amazing,” noting how the sauce elevates the entire experience. Available as single or double, this burger appeals to those seeking sophisticated flavors without fancy prices. 🍄
Beef Tallow Fries: McDonald’s Nostalgia Perfected
The golden potato fries get fried in beef tallow for that savory, nostalgic flavor McDonald’s abandoned decades ago. Made fresh in-house, these fries “come out crisp, fresh, golden and so, so, good.”
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For an extra 50 cents, customers can request parsley and rosemary sprinkled on top, creating herbed fries that punch above their weight class. The beef tallow adds tons of flavor while being more natural than processed oils. The loaded cheese fries get smothered in cheese sauce, green chili, and sour cream—turning sides into main event material. Onion rings also get the tallow treatment, providing crispy alternatives for those seeking variety.
Atmosphere
The Pearl Street location blends retro Americana with contemporary touches, featuring warm wood tones, varied subway tiles, and earthy greens reflecting Colorado’s landscape. Bright subway tiles and green beadboard paneling create an energetic, welcoming vibe with vintage burger joint charm.
The 70-seat dining room plus 14-seat outdoor patio offers options for every preference—booths, bar seating, or communal tables for groups. Multiple flat-screen TVs behind the bar create the perfect spot for catching games while enjoying quality burgers and Colorado beers.
A custom mural at the entrance reinforces the regenerative beef ethos with eye-catching graphics. The patio offers ideal people-watching on Pearl Street, perfect for Boulder’s outdoor dining culture. 🌲
Bottom Line
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100% regeneratively-raised beef from Colorado Cattle Company supporting sustainable ranching practices
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Affordable pricing from $8-14 for burgers making premium beef accessible
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All fries and onion rings cooked in beef tallow for nostalgic McDonald’s-style flavor
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One percent of C Burger sales donated to Zero Foodprint funding regenerative farming
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All-Colorado beverage program featuring local beers and spirits
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House-made soft serve ice cream in chocolate and vanilla
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From same team as Oak at Fourteenth and Corrida bringing fine-dining quality to fast-casual
Address: 921 Pearl Street, Boulder, CO 80302
📞 (303) 444-2337
🕔 Sun-Thu: 11 AM–9 PM, Fri-Sat: 11 AM–10 PM