Eat plain or with vanilla ice cream or yogurt. A study of 340 people who had heart attacks found that coffee had no effect on risk, but daily consumption of one or more cups of tea was associated with half the risk of developing a heart attack. Some decaffeinated and instant teas have less and herbal teas have none. Tea is good for you, whether it is hot or cold. However, new research shows that making tea outside is not the best way to make iced tea.
Bacteria can be on the tea leaves.
Bacteria multiple at room temperature when you add water. A safe way to make ice tea is to add ice to a strong brewed tea. The boiling water will kill the harmful bacteria. Like humans they need food, moisture, and a warm temperature. Use the sun to grow fruits, vegetables and flowers.