“Recently, 2,400-year-old charred tea remains were found in a bowl unearthed from tomb No. They used modern tea and modern tea residue as reference samples. Their results show that the sample contains abundant calcium phytoliths identifiable as tea and that its FTIR spectra are similar with that of the modern tea residue. They also detected caffeine, methoxybenzene compounds, organic acids, and several other compounds in both the ancient sample and the modern tea residue. The analysis and identification of charred suspected tea remains unearthed from Warring State Period Tomb.

Source: Ethiopian News December 14, 2021 19:50 UTC