Gypsum (Calcium Sulfate)

Taste and Character

• Accentuates hop bitterness and crispness: Sulfate tends to emphasize hop bitterness and a drier, snappier finish.{index=1}
• Clean, minerally backbone: Helps create the classic pale ale and IPA water profile many brewers associate with Burton-style brewing.

Where It Shines

• West Coast IPA, American IPA, Pale Ale, Cold IPA
• British bitters and pale ales (Burton-style profiles)
• Any hop-forward recipe where your water is low in sulfate and calcium :

Role in the Brewhouse

• Adds permanent hardness: Gypsum adds calcium ions that remain in solution (not removed by boiling).
• Supports mash and clarity: Calcium can support mash performance and help improve hot break and clarity, especially when building water from RO or distilled.
• Helps nudge mash pH downward: Often described as slightly lowering pH, depending on your starting water and grist.

Brewer’s Guidance

• Best practice: Measure your water (or start from RO) and target a profile rather than dosing blindly. Small changes can have a big impact.
• Where to add: Add to mash water and or kettle water. Dissolve thoroughly to prevent clumping.
• Typical starting point: Many retailers suggest simple baseline dosing such as about 1 teaspoon per 5 gallons, but the most accurate method is weighing grams based on your target ppm.
• Know the impact: A commonly cited reference is that 1 gram per gallon adds about 61.5 to 62 ppm calcium and about 147 ppm sulfate.
• Balance matters: Sulfate tends to emphasize hops, while chloride tends to emphasize malt fullness. Many brewers adjust both to fit the style.{index=9}

Product Attributes

• Ingredient: Calcium sulfate (gypsum)
• Use: Brewing water adjustment
• Form: Powder
• Storage: Keep sealed and dry to prevent moisture pickup

Good Fit If You Are Brewing

Pick gypsum when you want brighter hop definition and a crisper finish, especially if you brew with soft water, RO, or distilled water and your sulfate is low.{index=11}