Altbier water profile

A copper-colored German ale, clean and moderately bitter, cold-conditioned for a smooth, lager-like character.

Target water for Altbier

The target has a sulfate-to-chloride ratio of 1.2:1 (balanced) - the balance that shapes how hoppy or malty the beer tastes.

IonTarget (ppm)
Calcium (Ca²⁺)60
Magnesium (Mg²⁺)5
Sodium (Na⁺)15
Chloride (Cl⁻)55
Sulfate (SO₄²⁻)65
Bicarbonate (HCO₃⁻)70

Water target is a strong practical fit for the style family. Use as an RO starting point, then verify mash pH from the actual grist.

Brewing salt additions from RO water

Salts to add to reverse-osmosis or distilled water to reach this target, calculated by the BrewWaterSolver solver with the most common homebrew salts (calcium chloride, gypsum, Epsom salt, chalk and baking soda).

Salt5 gal (18.9 L)20 L
Calcium chloride (CaCl₂)2.03 g2.15 g
Gypsum (CaSO₄)1.57 g1.66 g
Epsom salt (MgSO₄)0.79 g0.84 g
Chalk (CaCO₃)0.54 g0.57 g
Baking soda (NaHCO₃)0.84 g0.89 g

Resulting water: Ca 62.9, Mg 5.1, Na 15.2, Cl 54.8, SO4 63.6, HCO3 69.9 ppm. Split the salts between mash and sparge water in the solver if you prefer.

Mash pH for Altbier

With RO water and the salts above, a typical Altbier grist is predicted to mash at pH 5.61, against a target of 5.40 (amber/brown color - balanced pH for malt character). To bring it down, add about 4 mL of 88% lactic acid for 5 gal (4.2 mL for 20 L).

Estimated from the style's typical color (SRM 13) without a real grain bill - enter your recipe in the solver for a sharper prediction, and always check with a pH meter.

Also listed by the Brewers Association as

German-Style Altbier - these BA styles use the same water target.

Classic brewing water for this style

Styles that use the same water

Open Altbier in the solver →