1. In a shaker (or other container), add 2 teaspoons of instant coffee.
2. There also add 2 teaspoons of sugar.
3. Then add 4 tablespoons of water.
4. Close the shaker and stir until you get a liquid as in the picture.
5. Take an empty glass and fill it halfway with ice cubes.
6. Pour into a glass previously obtained foam.
7. Add a little milk (to taste) and the coffee is ready!