Boil some water in the electric kettle, then wait for the water to stop simmering . Water above 90°C will scorch the coffee and destroy it's flavor, so it's important to wait for the boiling sound to stop.
Fill ¾ of the cup with the boiled water, then stir with the teaspoon until all the instant coffee is dissolved .
Fill the remaining ¼ of the mug . with milk or cream, then stir with the teaspoon again.