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Ale yeast

London Ale III / Conan / Vermont Ale

The NEIPA workhorse. Produces stone-fruit and tropical character that defines the modern hazy.

Also known as:Conan · Vermont Ale · WLP4000 · Wyeast 1318 · Lallemand Verdant IPA · Omega DIPA Ale
Category
Ale yeast
Attenuation
71-75%
Flocculation
Medium
ABV Tolerance
9-11%

What it tastes like

Every NEIPA you've loved was probably fermented with this strain or one of its identical siblings. Originally an English strain (London Ale III), the same family pops up as Conan (The Alchemist), Vermont Ale, and dozens of trade names. It produces stone-fruit and tropical esters that complement modern hops, leaves a soft pillowy mouthfeel, and ferments fast.

peachapricotstone fruitsoft mouthfeelpairs with citra/galaxy/nelson

Best in these styles

Fermentation profile

Ferments fast at 68-70°F. Stays in suspension well — produces the characteristic NEIPA haze without much help. Produces glucoamylase enzymes that can cause hop creep with active dry-hopping. Hold post-dry-hop at fermentation temp for 3-5 days to let diacetyl clean up before crashing.

Temp range
64-74°F (18-23°C)
Ideal temp
66-70°F
Esters
High — peach, apricot, tropical fruit
What to avoid
Cold-crashing too soon after dry hopping. Hop creep with this strain is real — the enzymes will re-ferment hop sugars, drop your FG by 2-3 points, and produce diacetyl. The crash needs to wait until the yeast has finished cleanup.

Available as

London Ale III / Conan / Vermont Ale is sold under multiple supplier brand names — same or near-identical strain.

FormatSupplierProduct codeNotes
Liquid White Labs WLP4000 Vermont Ale 100B cells
Liquid Wyeast 1318 London Ale III 100B cells
Liquid Omega DIPA Ale OYL-052 100B cells
Direct Conan equivalent
Dry yeast Lallemand Verdant IPA 11g
Closest dry equivalent; ferments fast

Comparable strains

If you can't source this strain, these alternatives bring overlapping character or fermentation behavior.

Wlp066 London Fog
See your supplier for details
Imperial Juice
See your supplier for details
Lallemand New England
See your supplier for details

History

The strain is widely believed to be the original Boddingtons strain from the Manchester brewery, which Wyeast packaged as 1318 London Ale III. The Alchemist (Vermont) isolated and propagated their own version for Heady Topper, popularizing it under the 'Conan' name. Verdant IPA, the dry equivalent, came to market in 2019 and dramatically lowered the barrier to NEIPA homebrewing.

Related brewing guides

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