Add the 2 tsp Nescafé Classic café instantáneo rociado; debe ser café instantáneo atomizado, no gránulos liofilizados and 1 tsp azúcar blanca ajustar; consulta los consejos para opciones sketo/medium/glykó to a Cocktail Shaker, tall Mixing Bowl with a tight lid, or a tall Glass (Large) if using an Immersion Blender/milk frother. Do not add the full cup of 3 tbsp agua fría para hacer espuma yet — only the 3 tablespoons of 3 tbsp agua fría para hacer espuma go in at this stage.

Seal the shaker tightly and shake vigorously for 30–60 seconds, until the mixture transforms into a thick, pale-brown, creamy foam with stiff peaks. If using a frother, froth for about 45 seconds. The foam is ready when it holds its shape and doesn't collapse immediately.

Add the 4 piece cubitos de hielo to a tall Glass (Large) (a 12–14 oz glass works perfectly). Pour in the 1 cup of 3 tbsp agua fría para hacer espuma.

Spoon or pour the foam carefully on top of the 3 tbsp agua fría para hacer espuma. It should float as a thick, distinct layer — this is the hallmark of a proper frappé.

If using ¼ cup leche evaporada o leche entera; opcional pero tradicional, drizzle the ¼ cup leche evaporada o leche entera; opcional pero tradicional or whole ¼ cup leche evaporada o leche entera; opcional pero tradicional gently over the foam or down the side of the Glass (Large). Do not stir — let it create a beautiful layered effect. Serve immediately with a straw and a long spoon.