1. Appearance: raw Pu 'er tea cakes are mainly turquoise and dark green; The color of cooked Pu 'er tea cake is black or reddish brown.

2. Taste: Raw Pu 'er tea is rich in fragrance, and the tea soup is fragrant and bitter. However, cooked Pu 'er tea is thick and sweet, hardly bitter, and very resistant to foaming.

3. Production technology: Raw Pu 'er evaporates water through natural Chen Fang. Cooked Pu 'er needs heap fermentation.