The mock gin can be kept in a capped bottle at room temperature for up to 1 month.
Grains of paradise are seeds from a West African plant in the ginger family. Dried ginger root, unlike ground ginger, is the whole root dried. Orris root, an antiquated term for "iris root," is literally the aromatic root of several iris species, used in gin and in some perfumes. All three can be found at specialty stores and at Kalustyan’s (212-685-3451).