Crystal 90 (Briess)
Crystal / caramel malt, typically 90 °L (237 EBC). Malt color varies by lot, treat listed values as typical and adjust to your malt analysis.
| Type | Crystal / caramel malt |
|---|---|
| Typical color | 90 °L · 237 EBC |
| Distilled-water mash pH | 4.77 (measured, titrated) |
| Buffering (a1) | -48.4 mEq/kg per pH |
In the mash
Crystal malts are kilned wet, which caramelizes sugars and generates acidity roughly in proportion to color. In the mash they pull pH downward, a 10% addition of a mid-color crystal typically drops the mash 0.05–0.1 pH, which is why caramel-forward grists often need little or no added acid.
Build a water profile around it →The calculator opens a new batch with Crystal 90 (Briess) already in the grain bill; the mash pH prediction updates live, with a per-lot DI pH override if you've measured your own sack.
More malts
pH data: Kai Troester, "The effect of brewing water and grist composition on the pH of the mash" (2009, braukaiser.com). Lot-to-lot variation of ±0.1 pH is normal. Malt DI pH, explained: what it is and how to measure your own →