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Here's a clone for the instant dressing mix you buy in the .7-ounce packets. When added to vinegar, water, and oil, you get one of the best-tasting instant salad dressings around. But what if you can't find the stuff, or it is no longer sold in your area, as I've heard is the case in some cities? Or maybe you just want to save a little money by making your own? Use the recipe below to make as much dry mix as you want, and save it for when you need instant salad satisfaction. I've used McCormick lemon pepper in the recipe here because it contains lemon juice solids that help duplicate the taste of the sodium citrate and citric acid in the real thing. The dry pectin, which can be found near the canning supplies in your supermarket, is used as a thickener, much like the xanthan gum in the original product.
Source: Even More Top Secret Recipes by Todd Wilbur.