Stir together all ingredients except the mint and ice in a large pitcher and refrigerate 12 hours.
Remove the tea bags. Stir well and serve over ice, garnished with mint if desired.
Notes
Net Carbs: 2g per serving (1 cup = 1 serving)
Storage: Store refrigerated for up to 3 days.
Recipe Yield and Serving Size: This recipe makes 8 cups total, for 8 (1-cup) servings.
If You Want it Sweet: Feel free to add your favorite sweetener to taste. Liquid stevia is good if you want to keep the carbs low. However, if keeping it low carb isn't a concern, liquid sweeteners that dissolve easily will work well, such as simple syrup or agave nectar.