- 1 1/2 ounces espresso or 3 ounces very strong coffee, cooled slightly
- 1 tablespoon sweetened condensed milk
- 1 1/2 teaspoons simple syrup
- Combine espresso, sweetened condensed milk, and simple syrup in a cocktail shaker. Fill shaker with ice, cover, and shake vigorously until outside of shaker is very cold and mixture inside is very, very frothy, about 30 seconds.
- Using a cocktail strainer or slotted spoon to hold back ice while allowing foam and some small ice chips to pass through, pour into an ice-filled glass.