Complex sentence: While unaged and unprocessed, raw "pu'er" is technically a type of green tea, ripened or aged raw "pu'er" has occasionally been mistakenly categorised as a subcategory of black tea due to the dark red colour of its leaves and liquor.
Split into simpler sentences: While unaged and unprocessed, raw "pu'er" is technically a type of green tea. Ripened or aged raw "pu'er" has occasionally been mistakenly categorised as a subcategory of black tea due to the dark red colour of its leaves and liquor.