4 Noses Brewing Co. 'Flatiron Fog' Hazy India Pale Ale Beer, Colorado
4 Noses Brewing Co. 'Flatiron Fog' Hazy India Pale Ale Beer, Colorado
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Crafted with reverence for both haze and hops, Flatiron Fog from 4 Noses Brewing Co. is a hazy IPA that captures the misty allure of Boulder’s iconic rock formations. Brewed in Broomfield, Colorado, this beer showcases the brewery’s flair for balancing bold aromatics with juicy drinkability. Known for small-batch precision and hop-forward creativity, 4 Noses delivers an expressive IPA that speaks to both their technical mastery and Colorado’s hop-loving culture.
Product Details:
- Style: Hazy India Pale Ale (IPA)
- ABV: Approximately 6.5%
- IBU: Estimated 45 (low perceived bitterness due to haze and residual sweetness)
- Format: 16 oz cans and draft
- Hops: Likely includes Citra, Mosaic, or other New World varietals (typical of the style; exact blend proprietary)
- Yeast: London Ale III or similar, known for juicy ester expression and haze retention
- Malt Bill: Likely includes oats and wheat for mouthfeel and haze stability
- Filtration: Unfiltered and heavily dry-hopped
- Production: Rotational release with regional distribution; small-batch with limited availability outside Colorado
Sensory Description:
A pillowy haze veils this IPA, offering a soft golden hue with a glowing, opaque body. The aroma is explosive with notes of ripe mango, fresh-squeezed orange juice, and hints of passionfruit, suggesting a generous late-stage dry-hop. On the palate, Flatiron Fog is lush and mouth-coating, with soft carbonation and no harsh bitterness. The use of oats and wheat provides a silky texture, while the yeast contributes tropical esters and light stone fruit notes. Despite its juicy character, a subtle dankness lingers in the background, offering complexity and balance.
Brewer's Background:
Founded in 2014 by the Ditslear family, 4 Noses Brewing Co. has quickly become a standout name in Colorado’s competitive craft beer scene. Located in Broomfield, the brewery is independently owned and operated, with a deep commitment to innovation across a wide range of styles, from IPAs to lagers to wild ales. Head Brewer Bjorn Lanwer leads a passionate team that emphasizes freshness, ingredient-driven recipes, and experimentation, often releasing limited-run beers that push stylistic boundaries. Flatiron Fog exemplifies their hop-forward ethos and modern approach to brewing.
Serving Suggestions:
Best enjoyed at 45–50°F, Flatiron Fog shines when served fresh in a tulip or IPA glass to maximize aroma retention. Pair it with spicy fish tacos, grilled pineapple salsa, or Thai basil chicken to enhance its tropical juiciness. A must-try for fans of New England-style IPAs, this beer is ideal for weekend hangouts, hazy-day picnics, or showcasing at your next local beer share.

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4 Noses Brewing Company
4 Noses Brewing has also embraced growth without losing sight of its roots. In 2023, they expanded with a new production facility and taproom in Denver’s North Park Hill neighborhood, giving them space to increase distribution and further explore innovation. Their taproom in Broomfield remains a cornerstone of community, complete with a lively patio, food trucks, and a welcoming vibe that reflects the warmth of the family behind the brand.
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