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Wild Culture - Baby Grand

North End Brewery / Valley Brewers · wild

A wild mixed culture captured on Kapiti Island and maintained by North End Brewery alongside the Valley Brewers club in a shared oak barrel. Smooth sourness with deep red-fruit character, after the style of North End's Baby Grand Sour Red Ale.

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2 brews

About

A wild mixed culture originally captured on Kapiti Island, New Zealand, and named Baby Grand by North End Brewery (Waikanae). North End maintain it alongside the Valley Brewers brew club (Lower Hutt) in a shared 250 L oak barrel. As a living barrel culture of Saccharomyces, Brettanomyces and lactic bacteria, its exact balance shifts over time, but it reliably produces a smooth sourness with deep red-fruit character comparable to North End's commercial Baby Grand Sour Red Ale. Being a wild culture, its specs vary batch to batch — the figures below are what it has actually done in your brews.

Recipe pairing

Grains
Vienna and Munich-leaning malt bills with some crystal for red-ale depth
Hops
Low, aged or neutral hopping; the culture and malt lead, not bitterness
Adjuncts
Red and dark fruit suit the house character; oak barrel adds tannin and complexity
Suited to
Flanders Red Ale, Oud Bruin, Wild Specialty Beer

Brewing tips

  • A living barrel culture — expect months of slow fermentation and souring, not a quick primary.
  • Character drifts over time as the microbial balance shifts; taste and track rather than relying on fixed specs.
  • Best for long-aged Flanders-style reds and oud bruins where complexity develops with time.

Handling & storage

Rehydration
Pitched as active culture/slurry from the barrel or a starter.
Storage
Maintained live in a shared oak barrel; topped up rather than stored as a pack.

In your brews

Used in 2 batches 2024-11-30 → 2025-12-21
Attenuation (achieved) 88%
ABV range 7.8% 1 measured

Styles brewed

23B Flanders Red Ale
2

Used in

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