You can easily brew a cup of tea with a tea bag, without having to use a strainer or take extra steps. Just drop the bag into a cup of hot water, and you are ready to enjoy your tea in minutes.

“With any really high-quality tea, like oolong, you don’t want to use scalding hot water. You end up with an over-caffeinated or bitter cup, especially with green tea,” he said. “If people ...