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BJCP Category 16B — Dark British Beer
32 SRM (Extra Dark Porter)

Oatmeal Stout

“A dark, luscious English stout with a luxurious velvety mouthfeel derived from generous additions of flaked oats.”

Official BJCP Vital Statistics Range

Original Grav. (OG)1.045–1.065
Final Grav. (FG)1.010–1.018
Bitterness (IBU)25–40
Color (SRM)22–40
Alcohol (ABV)4.2–5.9%

Sensory Character & Tasting Notes

•Milk chocolate, dark roast coffee, and warm cream
•Nutty, earthy oat softness
•Silky, full coating mouthfeel with zero harsh astringency
•Medium sweetness balancing roasty bitterness

Origin, Heritage & Craft Tradition

A late-Victorian British evolution of the sweet stout, oatmeal stouts were historically marketed to invalids and nursing mothers for their nutritional beta-glucans. Modern craft brewing revived the style through Yorkshire icon Samuel Smith, proving that oats provide an unmatched cashmere texture without cloying sweetness.

Authentic Grain Bill & Mash Schedule

Mash Target
154°F for 60 Minutes
Higher single infusion to preserve silky dextrins and beta-glucan body
Representative Grist Ratios:
Maris Otter Pale Ale Malt↗
English bready malt core70%
Flaked Oats (Rolled)↗
Silky mouthfeel and creamy dense head12%
Chocolate Malt (British)↗
Cocoa bean and milk chocolate notes8%
Crystal 80L↗
Dark raisin caramel body6%
Roasted Barley↗
Deep coffee dryness and opaque black color4%

Recommended Yeast Strains

SafAle S-04 (Fermentis)
Compare ↗
Attenuation: 75-82% • Flocculation: High
WLP002 English Ale (White Labs)
Compare ↗
Attenuation: 63-70% • Flocculation: Very High
LalBrew Nottingham (Lallemand)
Compare ↗
Attenuation: 77-83% • Flocculation: High

Water Profile & Salts

High bicarbonate water (London/Dublin profile) to balance dark grain acidity and accentuate chocolate roundness.

Commercial Reference Benchmarks

Benchmark your homebrew against these commercial archetypes:

Samuel Smith Oatmeal StoutYoung's Oatmeal StoutSummit Oatmeal Stout
Northern Brewer Brew. Share. Enjoy. Homebrew Starter Kit
Recommended Hardware Match

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Brew Day Precision Calculators for Oatmeal Stout

All 8 Calculators→

Dial in this recipe with authentic target gravities, bitterness, strike temperatures, and carbonation:

Related Styles in Dark British Beer & Similar SRM

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