Big tea bag brands tend to have loyal followings, but our taste test reveals it's worth trying supermarket own-brand options ...

They purchased empty tea bags made of three commonly used materials: polypropylene, nylon, and cellulose. The team brewed the tea bags as a consumer would (minus the tea leaves) in sterile water ...

Khbar Online said, according to research conducted at American universities, it has been proven that many of the materials ...