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One alternative is Refrigerator Tea. Using filtered water, the tea of your choice, and other ingredients like sweeteners, you can “brew” ice tea in the refrigerator overnight. Without any heat, bacteria are not a problem. Monica explains how she makes Refrigerator Tea and includes links to various teas and tea-making equipment. But if you have tea bags, water and a pitcher, you’re good to go.
Click on the How to Make Refrigerator Tea link below to see Monica’s article and recipe.