13C English Porter
| Calcium Chloride | 4 g in mash |
| Calcium Sulphate | 2 g in mash |
| Sodium Bicarbonate | 4 g in mash |
| Calcium Carbonate | 6 g in mash |
| Magnesium Sulphate | 1 g in mash |
| Lactic acid (88%) | 3–4 ml in sparge |
| Gladfield Ale Malt | 4 kg | 61.5% |
| Gladfield Munich Malt | 1.4 kg | 21.5% |
| Gladfield Light Crystal Malt | 0.4 kg | 6.2% |
| Gladfield Light Chocolate Malt | 0.3 kg | 4.6% |
| Gladfield Shepherds Delight Malt | 0.25 kg | 3.8% |
| Gladfield Eclipse Wheat Malt | 0.15 kg | 2.3% |