New England, United States
The hazy IPA emerges in New England
Vermont brewers produced a soft, low-bitterness, aroma-driven IPA that inverted the West Coast template and became the dominant modern style.
The version you have probably heard
“Hazy IPA is simply unfiltered IPA, and the cloudiness is a side effect of not filtering.”
The haze is engineered. It comes from specific protein-polyphenol interactions, grain choices and yeast selection, and an unfiltered West Coast IPA does not look or taste like one.
The haze is produced deliberately — hop polyphenols, wheat and oat protein and suspended low-flocculating yeast — rather than being an unfiltered accident.
What was going on around it
An event on its own is a date. These are the periods it belongs to, where the argument about what changed is actually made.
Why it matters
The most commercially significant new style of the twenty-first century, and the one that made freshness a mainstream consumer concern.
How well this is established
| Certainty | Well attested. Broadly agreed across sources, though the precise dating or detail may vary between them. |
|---|---|
| When | 2004–2016. Recorded as a period rather than a date because it happened over time. |
| Where | New England, United States |
Styles this shaped
Traditions
- American craft brewing — The post-1980 American movement built on intense hop character, reinterpretation of European styles, and rapid categorical change.
Either side of this
← 2002: Small brewers’ relief is introduced in Britain · 2006: Gluten-free and gluten-reduced beer diverge as categories →
See the whole sequence on the beer history timeline.
Last reviewed 2026-08-16.