Alum (potassium aluminum sulfate) is a food additive that is ideal for pickling and canning. It helps create crisp pickled fruits or vegetables. Wondering what exactly alum is used for? This cooking essential is a crystalline powder that helps keep fruits and vegetables firm and crispy when cooking. Try adding a bit of alum when pickling for that perfect crunch. Dissolve alum in water using amounts specified in your recipe.

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GTIN: 052100002149. Best Sellers Rank: See Top 100 in Grocery & Gourmet Food. Package Information: Jar. Unit Count: 7.6 Ounce. Item Form: Powders. Variety: language _ tag. Brand: McCormick. : B01LZV3DG7. Manufacturer: Mccormick. UPC: 052100002149. Package Dimensions: 5.83 x 4.92 x 2.2 inches; 1.9 Ounces. Is Discontinued By Manufacturer: No.