紫苏杨梅姜 (zǐ sū yáng méi jiāng) means "purple perilla, bayberry, ginger" and that's what we have here.
紫苏 (zǐ sū), known in Japanese as "shiso", is Perilla frutescens. 杨梅 (yáng méi) is Myrica rubra and 姜 (jiāng) well, you know what ginger is. The yangmei are slightly, but pleasantly tart, the ginger is spicy and the perilla adds a herbal note.
Fresh Yangmei