21B Red IPA
Red IPA (January 2023)
Grain bill
| Gladfield Ale Malt | 4.6 kg | 64.3% |
| Gladfield Aurora Malt | 1.2 kg | 16.8% |
| Gladfield Light Crystal Malt | 0.5 kg | 7% |
| Gladfield Medium Crystal Malt | 0.5 kg | 7% |
| Gladfield Dark Crystal Malt | 0.25 kg | 3.5% |
| Gladfield Shepherds Delight Malt | 0.1 kg | 1.4% |
Adjuncts
| Whirlfloc | half tablet @ 10 min |
| Yeast nutrient | half tsp @ 10 min |
Hop schedule
| Hop | 60 min | 10 min | WP | DH#1 |
|---|---|---|---|---|
| Pacific Jade | 25g | · | 25g | · |
| Mosaic | · | 30g | 70g | 100g |
Yeast
| Mangrove Jacks M44 US West Coast | 2 packets |
Water additions
| Calcium Sulphate | 1 tsp in mash |
| Calcium Carbonate | half tsp in mash |
About This Beer
Fifth captured Red IPA. Six months after batch 26 (July 2022) and one year after Gen 5 (February 2022). The recipe family has stabilised — same grain bill structure, same hop schedule, same yeast across the last three Red IPA iterations.
The Recipe Drift Across the Red IPA Series
| Gen 5 (Feb 2022) | #26 (Jul 2022) | #32 (Jan 2023) | |
|---|---|---|---|
| Ale Malt | 4.60 | 4.60 | 4.60 |
| Aurora | 1.20 | 1.20 | 1.20 |
| Light Crystal | 0.55 | 0.55 | 0.50 |
| Medium Crystal | 0.44 | 0.45 | 0.50 |
| Dark Crystal | 0.24 | 0.24 | 0.25 |
| Shepherds Delight | 0.06 | 0.06 | 0.10 |
| MgSO₄ in mash | none | 1 tsp | none |
| Sparge pH adjustment | none | ~5.0 | none |
| Dry hop day | 7 | 5 | 5 |
| Priming sugar | 125 g sucrose | 100 g sucrose | 110 g dextrose |
Three changes vs batch 26:
- Crystal stack rebalanced — light slightly down, medium slightly up, Shepherds Delight nearly doubled
- Water profile reverted to Gen 5 — MgSO₄ and sparge pH adjustment dropped
- First switch to dextrose for bottle conditioning
Grain Bill
7.15 kg total, all Gladfield:
- 4.60 kg Gladfield Ale Malt (64.3 % of grist)
- 1.20 kg Gladfield Aurora Malt (= Melanoidin in the HBW original)
- 0.50 kg Gladfield Light Crystal
- 0.50 kg Gladfield Medium Crystal
- 0.25 kg Gladfield Dark Crystal
- 0.10 kg Gladfield Shepherds Delight (= Weyermann Special W in the HBW original)
The Shepherds Delight bump from 0.06 to 0.10 kg is the most notable proportional change in the recipe family.
Hop Schedule — Identical to Batch 26 / Gen 5
250 g total, same Pacific Jade + Mosaic split:
- Pacific Jade 25 g at 60 min — bittering
- Pacific Jade 25 g at whirlpool 20 min
- Mosaic 30 g at 10 min
- Mosaic 70 g at whirlpool 20 min
- Mosaic 100 g dry hop on day 5
Fermentation
2 packets of MJ M44 US West Coast pitched at 19 °C. Dry hop on day 5 from pitch: 100 g Mosaic.
FG hit 1.008 vs 1.013 target — standard M44 over-attenuation at 19 °C. OG fell 6 points short of target (1.054 vs 1.060) — bigger miss than batch 26’s 2-point shortfall on the same recipe. Possible grain crush variation or efficiency drift.
Water treatment: 1 tsp calcium sulphate, ½ tsp calcium carbonate. No MgSO₄ this batch — Owen reverting to the Gen 5 profile. No sparge pH adjustment — also a revert from batch 26’s pH ~5.0 experiment.
Packaging — First Dextrose
110 g dextrose (glucose) for bottle conditioning — first switch from sucrose to dextrose in the captured collection.
Dextrose produces ~85 % as much CO₂ as sucrose by weight, so 110 g dextrose at 22.5 L is ~93 g sucrose-equivalent, or ~4.1 g/L sucrose-equivalent — on the conservative end of bottle-conditioning.
| Batch | Sugar | Type | Volume | sucrose-eq g/L | Outcome |
|---|---|---|---|---|---|
| Hazy IPA II (#23) | 130 g | sucrose | 22 L | 5.9 | — |
| Black IPA (#24) | 120 g | sucrose | 22 L | 5.5 | — |
| Black IPA (#25) | 105 g | sucrose | 20.8 L | 5.0 | ”less fizzy” |
| Red IPA (#26) | 100 g | sucrose | 24 L | 4.2 | unknown |
| Tasman PA (#29) | 140 g | sucrose | 22 L | 6.4 | ”good head” ✓ |
| Panhead APA (#30) | 120 g | sucrose | 20.5 L | 5.85 | not recorded |
| Red IPA (#32) | 110 g | dextrose | 22.5 L | ~4.1 | not recorded |
Numbers
| Stage | Target | Actual |
|---|---|---|
| Mash + sparge | 34 L | 34 L |
| Pre-boil | 27 L | 27 L |
| Boil addition | 3 L | 3 L |
| Post-boil | 27 L | 26.5 L |
| Into fermenter | 24 L | 24 L |
| Bottle | 22.5 L | 22.5 L |
| Target | Actual | |
|---|---|---|
| OG | 1.060 | 1.054 |
| FG | 1.013 | 1.008 |
| ABV | 6.17 % | 6.04 % |
Volume tracking on this brew day was exceptionally tight — hit fermenter and bottle targets exactly.
Lineage
- Red IPA (November 2020) — the original Home Brew West kit, first Red IPA
- Red IPA (June 2021) — first all-Gladfield version
- Red IPA (September 2021) — 9.5/10 iteration
- Red IPA Gen 5 (February 2022) — recipe stabilised
- Red IPA (July 2022) — experimented with MgSO₄, sparge pH 5.0
- This brew — Red IPA (January 2023) — reverted water profile; first dextrose; Shepherds Delight bumped