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21B Specialty IPA: Red IPA

RIPA — Citra & Superdelic Cryo

Brewed 2025-02-11 Batch · 24 L Owen Paterson

Grain bill

Gladfield American Ale Malt 5.5 kg 75.9%
Gladfield Munich Malt 0.7 kg 9.7%
Gladfield Redback Malt 0.55 kg 7.6%
Gladfield Shepherds Delight Malt 0.45 kg 6.2%
Gladfield Eclipse Wheat Malt 0.05 kg 0.7%

Adjuncts

Yeast nutrient half tsp @ 10 min
Whirlfloc half tablet @ 10 min

Hop schedule

Hop 60 min10 minWP 80°CDH#1
Citra 20g30g50g·
Superdelic Cryo ··50g50g

Yeast

LalBrew BRY-972 packets

Water additions

Calcium Sulphate 1 tsp in mash
Calcium Chloride half tsp in mash
Lactic acid (88%) 6 drops in sparge

Tasting notes

Repeat RIPA with Superdelic Cryo replacing previous cool-side hop. Higher OG achieved (1.061 vs previous 1.056) through increased mash and sparge volumes.

Fermentation profile

RAPT Pill·329 readings over 13d 17h·

Gravity

1.061OG
1.016FG
74%Attenuation
4d 24hTo terminal

Temperature

25.1°CPeak
17.8°CMean
6.6°CMin
18.4°CRange
TimeGravityTemp

About This Beer

A repeat of Owen’s successful RIPA recipe with one key change: Superdelic Cryo replacing the previous whirlpool and dry hop variety. Total Superdelic reduced from 200g to 100g — cryo concentrate runs hotter, so the rate drops accordingly.

The grain bill stays constant: American Ale Malt, Munich, Redback, Shepherds Delight, and a small amount of Eclipse Wheat. Citra does the heavy lifting on the hot side — 20g at 60 minutes, 30g at 10 minutes, and 50g in the whirlpool. The Superdelic Cryo hits the whirlpool (50g) and dry hop (50g at Day 5).

One process refinement from the previous batch: mash volume increased to 18L, sparge to 16L, with no boil additions. The result was OG 1.061 — up from 1.056 on the same grain bill — confirming that the additional liquor was extracting more efficiently than the previous setup.

OG 1.061, FG 1.016, ABV 5.9%.