21B Red IPA
| Calcium Sulphate | 1 tsp in mash |
| Calcium Carbonate | half tsp in mash |
| Magnesium Sulphate | 1 tsp in mash — new vs Gen 5 |
| Lactic acid (88%) | as needed in sparge water, target pH ~5.0 (unusually low vs other batches' 5.5–5.7) |
| Gladfield Ale Malt | 4.6 kg | 64.8% |
| Gladfield Aurora Malt | 1.2 kg | 16.9% |
| Gladfield Light Crystal Malt | 0.55 kg | 7.7% |
| Gladfield Medium Crystal Malt | 0.45 kg | 6.3% |
| Gladfield Dark Crystal Malt | 0.24 kg | 3.4% |
| Gladfield Shepherds Delight Malt | 0.06 kg | 0.8% |
| Pacific Jade | 25 g |
| Mosaic | 70 g |