Put sugar and water in a saucepan and simmer. Simmer on low heat and stir until sugar completely dissolves. Turn off heat and let it cool down to room temperature. Stir in the vanilla.

Blend instant coffee, milk, ice, and homemade syrup until smooth. Start the blender on low, then turn it up to high. Use a tamper tool to make sure the ice gets blended completely.

Add the cereal to a bowl, and pour in the desired amount of milk.

Serve the cereal with frappuccino.