21B Specialty IPA: Red IPA
West Coast RIPA II
Grain bill
| Gladfield American Ale Malt | 4.2 kg | 62.2% |
| Gladfield Vienna Malt | 1.3 kg | 19.3% |
| Gladfield Shepherds Delight Malt | 0.4 kg | 5.9% |
| Gladfield Aurora Malt | 0.3 kg | 4.4% |
| Gladfield Redback Malt | 0.3 kg | 4.4% |
| Gladfield Rye Malt | 0.2 kg | 3% |
| Gladfield Eclipse Wheat Malt | 0.05 kg | 0.7% |
Adjuncts
| Aromazyme | manufacturer dose |
| Yeast nutrient | 2 g @ 10 min |
| Whirlfloc | 1 g @ 10 min |
Hop schedule
| Hop | 60 min | 30 min | 10 min | WP | DH#1 | DH#2 |
|---|---|---|---|---|---|---|
| Mosaic | 15g | 20g | 25g | 20g | 80g | · |
| Riwaka | · | 25g | 25g | 20g | · | 100g |
Yeast
| Froth Tech Vape FT02 | 1 packet |
Water additions
| Calcium Chloride | 2 g |
| Magnesium Sulfate | 4 g |
| Calcium Sulfate | 8 g |
Tasting notes
2024-06-22
The second West Coast RIPA iteration, swapping BRY-97 for Froth Tech Vape FT02 — a NZ dry yeast with reported thiol activity — and adding Aromazyme to enhance biotransformation. A seven-malt red IPA base with a Mosaic/Riwaka split dry hop.
Grain Bill
The RIPA grist: American Ale (62.2%) for the fermentable base; Vienna (19.3%) and a supporting cast of Gladfield specialty malts — Shepherds Delight (5.9%), Aurora (4.4%), Redback (4.4%), Rye (3.0%), and a touch of Eclipse Wheat (0.7%) — for the layered red malt character that defines the style.
Hops
Mosaic and Riwaka in a split dry-hop approach:
- Boil: Mosaic 15 g at 60 min, Mosaic 20 g + Riwaka 25 g at 30 min, Mosaic 25 g + Riwaka 25 g at 10 min
- Whirlpool: Mosaic 20 g + Riwaka 20 g (10-minute stand)
- Dry hop round 1 (day 4): Mosaic 80 g with Aromazyme dose
- Dry hop round 2 (days 5–20): Riwaka 100 g
The two-stage dry hop allows Mosaic’s earthy tropical to integrate during active fermentation while Riwaka’s citrus is added later for freshness.
Fermentation
Froth Tech Vape FT02 pitched at 20°C under 1–2 psi. Vigorous fermentation required foam management at days 3–4. Temperature raised to 22°C around day 7 with spunding valve closed for CO₂ capture.
Packaging & Tasting
Mixed packaging on day 20 — counter-pressure bottling and keg — carbonated to 2.35 vol CO₂. Tasted six days before packaging: good colour, strong west-coast profile, solid aroma. Counter-pressure bottling performed well for the bottle share portion.