No other gin tastes like Hendrick's because no other gin is made like Hendrick's.
HENDRICK'S GIN is distilled in not one but two utterly dissimilar sorts of still. The two leaders of this particular ensemble of stills are the Bennett, an antique copper pot dating right back to 1860, and the Carter-Head, hailing from 1948 (of which only a few exist today).
The Bennett steeps the botanicals in spirit overnight prior to distillation resulting in a rich, complex liquid. Whereas the Carter-Head gently steams the botanicals in a basket atop its lofty neck, so influence is imparted upon the spirit in something akin to a botanical steam bath. This yields a lighter, more delicate spirit.
The harmonious combination of the Bennett and Carter-Head stills create an unusually smooth gin like no other that has the required character and balance of subtle flavours.