Ing sajeroni tuwuhan wasabi iku ngandung unsur kimia kang ndadèkaké rasa wasabi pedhes, tuladhané: "isotiosianat" utawa ing jeneng kimiane "(6-methylthiohexyl isothiocyanate, 7-methylthioheptyl isothiocyanate, lan 8-methylthiooctyl isothiocyanate)".