The secret to a great gimlet is a great lime cordial. In a pinch,
lime juice mixed with simple syrup or agave nectar can be substituted, but it's
worth making your own. This recipe makes more lime cordial than needed for the
cocktails. Offer some of the leftover portion in a small pitcher for designated
drivers to splash into ginger beer or tonic water. If you like, you can substitute
gin for the vodka.