Make a cup of espresso - or you can buy some. Allow it to cool some.
Toss some ice in the glass until it reaches the top of the glass.
Use the jigger and measure 2 oz of Licor 43. Pour the Licor 43 into the glass.
Use the jigger and measure 3 oz of Espresso. Pour the Espresso into the glass.Note: if desired, you can add the espresso straight into the glass, but this will likely end up being an ounce or two more.
Use a bar spoon to gently stir the drink together.