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Baking soda test: To test baking soda's effectiveness: mix 1/4 teaspoon baking soda with 2 teaspoons of vinegar and the mixture should bubble immediately. Wheat 20+ years Flour (white) 3-5 years Rice (white) 3-4 years Quick Oats 4-5 years Macaroni 6-8 years Pinto beans 6-8 years Sugar 20+ years Powdered Milk 2-3 years Cooking oil 2 years Salt ... ................
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