Herbs that Release the Exterior

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Because of its aromatic property, what special instruction should be followed when cooking Bo He (menthae haplocalycis herba) in decoction?

Crush herb before cooking
Stir-fry in honey before decocting
Add during the last five minutes of cooking
Boil 30-60 minutes longer than the rest of the formula

Bo He has an aromatic property that ascends to the head and opens the head, eyes, and throat. Prolonged heat can destroy this aromatic property, so it should be added during the end of cooking.

Source: Chen, J. and Chen, T. (2004). Chinese Medical Herbology and Pharmacology. Art of Medicine Press. pp. 69 [Q527]