Add a good amount of ice to your shaker, then add in the other ingredients.
Shake for one to two minutes until the ingredients are combined and the gin is icy cold.
Pour into shot glasses and garnish with a slice of lime.
You can use your favorite gin for these shooters. If you use a more expensive gin, you may want to use just a squeeze of lime juice rather then half a lime so that you really enjoy those botanicals.
One of the secrets to a really smooth gin shot is to get it icy cold. Shake the ingredients with a good helping of ice, and shake for a good couple of minutes so everything is well combined and cold. The ice will help to dilute the gin slightly to and remove and harshness.