What type of tea particles commonly fill standard, low-cost flat tea bags?

Answer

Fannings or dust, which are the smallest leftover particles from processing.

Standard, lower-cost flat tea bags are typically filled with the smallest remnants generated during the processing of higher-quality tea destined for other formats. These fine particles are referred to as fannings or dust. Because these particles are so small, they have an extremely high surface area relative to their mass, causing them to release their contents very rapidly when steeped in hot water. While this rapid release provides quick color and immediate flavor presence, it often leads to the over-extraction of undesirable compounds. Specifically, this rapid leaching results in brews that are frequently characterized by bitterness and a lack of nuance, as tannins and caffeine are released too quickly and dominate the flavor profile before the more complex oils and notes can properly develop.

What type of tea particles commonly fill standard, low-cost flat tea bags?
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