North Mountain Supply Food Grade Calcium Sulfate Gypsum is a versatile mineral additive packaged in a convenient 1.5 lb plastic jar. The jar features a tamper evident airtight seal to help maintain quality and freshness until you are ready to use it in brewing, gardening, food preparation or craft applications.
In brewing, gypsum is one of the most commonly used water adjustment salts. It is used to:
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Add hardness to soft or distilled water
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Increase calcium and sulfate levels in brewing water
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Gently increase mash acidity where needed
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Help proteins settle during the boil, supporting better clarity and stability
A typical guideline is to use approximately 1 teaspoon of gypsum per 5 gallons of brewing water, adjusting based on your recipe, starting water profile and target style. By tuning calcium and sulfate levels, you can influence hop perception and overall balance, especially in pale ales, IPAs and other hop forward beers.
Food grade calcium sulfate also plays an important role in several culinary applications. It is traditionally used:
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As a coagulant in tofu making, helping soy milk set into firm curds
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In wine production to help control tartness and contribute to clarity
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As an ingredient in pickling and canning recipes that call for calcium sulfate
Outside the kitchen and brewhouse, gypsum is widely used as a soil amendment in gardening and agriculture. When applied properly, it can:
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Increase calcium and sulfur levels in the soil
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Improve soil structure and water retention in certain soil types
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Help treat or prevent blossom end rot in plants that are sensitive to calcium deficiency
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Support mushroom cultivation as part of mushroom spawn or substrate recipes
Gypsum is also a foundational material in building and craft applications, where it is used to make plasters, molds and casts due to its setting and casting properties.
Key features:
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1.5 lb plastic jar of food grade calcium sulfate gypsum
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Tamper evident airtight seal helps protect freshness and quality
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Useful in brewing to increase calcium and sulfate, support mash pH, and aid protein settling
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Traditional coagulant for making tofu
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Helps control tartness and clarity in wine and appears in some pickling and canning recipes
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Functions as a soil conditioner and pH related amendment in gardening
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Used to increase calcium and sulfur levels in soil and help address blossom end rot
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Employed in building and craft work to make plasters, molds and casts
Suggested uses:
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Adjust brewing water for beer and other fermented beverages according to your water report and recipe
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Make tofu and other soy based foods that require a calcium based coagulant
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Fine tune wine tartness and clarity following trusted winemaking guidelines
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Add to garden soil or potting mixes as part of a broader nutrient and amendment plan
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Support mushroom growing projects that call for gypsum in the substrate
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Mix into plaster and casting recipes for molds, art projects and repairs
Store the jar tightly closed in a cool, dry place and use clean, dry measuring tools. Always follow reliable recipes or agronomic recommendations for dosing, whether you are brewing, cooking, gardening or casting with this multipurpose food grade gypsum.