Tequila Espresso Martini

My friend developed this recipe in advance of his wedding, and I made it to be his guinea pig. It’s super tasty, and nicely balanced (the agave goes well both with the espresso and the tequila; I could imagine knocking it down a little to make it slightly more coffee/forward).

• 1 oz Mr. Black cold brew coffee liqueur
• 1 oz reposado tequila
• 1 oz espresso
• 1/2 oz agave