Maris Otter (Crisp)
Base malt, typically 3 °L (7 EBC). Malt color varies by lot — treat listed values as typical and adjust to your malt analysis.
| Type | Base malt |
|---|---|
| Typical color | 3 °L · 7 EBC |
| Distilled-water mash pH | 5.69 (measured, titrated) |
| Buffering (a1) | -46.6 mEq/kg per pH · a2 6.35, a3 -2.62 (cubic) |
In the mash
Base malts form the backbone of the grist and largely set the mash pH floor: in distilled water most land between 5.5 and 5.8, and — as Troester’s 2009 measurements showed — color is only a loose predictor of where a given lot falls. On low-alkalinity water a pale base-malt grist usually needs only a small acid addition to reach the 5.3–5.4 range.
Build a water profile around it →Add Maris Otter (Crisp) to a grain bill in the calculator and the mash pH prediction updates live — with a per-lot DI pH override if you've measured your own sack.
pH data: A.J. deLange’s published malt titration curves (MBAA Technical Quarterly 52(1), 2015). Lot-to-lot variation of ±0.1 pH is normal.