Black tea is what most Westerners picture when they think of tea. Black teas are at or near 100% oxidation giving them a deep, full flavor that can be astringent depending on the type and quality of the tea. Some blacks, such as Assam, are very full bodied and astringent. Others, such as Darjeeling, are much milder in flavor and can even have floral notes. Black teas are often flavored, the most famous of which is the Earl Grey, which is infused with bergamot oil. Teabags are the most popular way to prepare black tea, primarily for their affordably and ease of use, though loose tea is becoming more sought-after by the general tea drinker. Their caffeine content is high.