Espresso Mexicano is a rich and indulgent coffee cocktail that combines the flavors of espresso, tequila, and chocolate liqueur. It is a perfect after-dinner drink, with a balance of bitter and sweet flavors. The espresso provides a strong and bold base, while the tequila adds a subtle kick. The chocolate liqueur adds a touch of sweetness and richness. Serve it in a martini glass and garnish with a sprinkle of cocoa powder for a decadent treat.