Classic: 2 to 3 grams, 200 mills of water at around 95+ C degrees, 3 to 5 mins depend on preferences. Infuse with boiling water for up to 3 minutes if you want your tea stimulating and energizing; 3-5 minutes if you want it to have a soothing and relaxing effect.
After you have finished brewing, take the leaves out of the cup/teapot – if they remain in the water too long, they start releasing tannins. Tannin makes tea taste bitter, inhibits absorption of magnesium and iron which are necessary for the body to function properly.
All brewing tips is a guidance only. The best is experiment to find own way depend on preferences.