Add the 2 tsp Nescafé Classic速溶咖啡 堆积；必须是喷雾干燥速溶咖啡，不能是冻干颗粒 and 1 tsp 白糖 根据口味调整；参见贴士了解sketo/medium/glykó选项 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 冷水 用于起泡 yet — only the 3 tablespoons of 3 tbsp 冷水 用于起泡 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 冰块 to a tall Glass (Large) (a 12–14 oz glass works perfectly). Pour in the 1 cup of 3 tbsp 冷水 用于起泡.

Spoon or pour the foam carefully on top of the 3 tbsp 冷水 用于起泡. It should float as a thick, distinct layer — this is the hallmark of a proper frappé.

If using ¼ cup 淡炼乳或全脂牛奶；可选但传统做法, drizzle the ¼ cup 淡炼乳或全脂牛奶；可选但传统做法 or whole ¼ cup 淡炼乳或全脂牛奶；可选但传统做法 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.