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A half sour pickle has a wonderful crisp bite, and a tangy slightly sour taste. Depending upon the pickle spice blend that you choose to use, you can vary the flavor slightly while still retaining the basic principles of the half sour.
Save. Sour salt is crystallized citric acid, a weak acid derived from citrus fruits such as lemons and limes. Sour salt is used as a seasoning to add a soft pucker to lemonade, borscht and other recipes. It also is used in canning and helps preserve foods such as apples and pears, which otherwise darken or soften.