To be clear, you will still need to properly prepare the instant coffee to use it in an espresso martini. It would be great if you could simply spoon the granules into the shaker and mix them up with the other ingredients, but that's not ideal. However, combining a little hot water with some instant coffee and stirring is much faster (and less complicated) than operating a fancy espresso machine or scalding your fingers on a blazing moka pot. Plus, since instant coffee is basically very concentrated dehydrated coffee, it dissolves almost instantly in hot water so there's no need to strain any solid grounds out, furthering its swift prep time.

Once you've made your coffee and let it cool, just pour it into a shaker with vodka, coffee liqueur, and some sweetener, then shake everything vigorously with ice. Strain the mixture into a glass and you should have a very tasty martini that will both wake you up and give you a fantastic java flavor. Espresso martinis are great with brunch, after dinner, or even as an afternoon treat.