Purple Giant Hyssop, Wrinkled Giant Hyssop, Korean Mint, Blue Licorice, huò xiāng (藿香), bangsnnip (방아잎), Patchouli herb--whatever regional name is chosen, they all refer to the same plant: Agastache rugosa (Fisch. & C.A.Mey.) Kuntze.  For purposes of this post, the two most abundant names I found were (Purple) Giant Hyssop and Korean Mint, hence the top-title billing.