28B Mixed-Fermentation Sour Beer
| Calcium Chloride | 3 g |
| Lactic Acid | Mash water to pH 5.3, sparge water to pH 5.5. No wort pre-acidification — the clean primary drops pH on its own. |
| Weyermann Barke Pilsner Malt | 6.1 kg | 55.5% |
| Weyermann Pilsner Malt | 1.2 kg | 10.9% |
| Weyermann Wheat Malt Pale | 2.7 kg | 24.5% |
| Harraways Rolled Oats | 1 kg | 9.1% |