glucoraphanin --- myrosinase ----> Sulforaphane

adding ground mustard seed may be a viable way to increase sulforaphane in cooked broccoli. Building on this work, a new trial in humans shows that adding freshly ground mustard seed may increase sulforaphane by as much as four-fold compared to cooked broccoli that hasn't had mustard powder added.

Cooking disables needed myrosinase normally.