The Asian origin black tea
leaves like Lapsang Souchong, Earl Grey and Formosan Straight
during their processing and flavor development are hot iron plate
dried and smoked from pine, bamboo or spruce fire. Infusions
made from these smoked tea products exhibited higher level of
benzo(a)anthracene and chrysene compared to non-smoked samples
(Pincemaille, Schummer, Heinen, & Moris, 2014).