# Method:
01 - Combine ice cubes, cold water, freshly squeezed lemon juice, granulated sugar, and blue raspberry syrup in a blender.
02 - Blend on high speed until the mixture achieves a uniform, slushie-like texture.
03 - Taste the slushie and adjust sweetness or tartness with additional sugar or lemon juice as needed.
04 - Moisten rims of serving glasses and dip them in blue sanding sugar for decoration.
05 - Pour the slushie into prepared glasses. Garnish with lemon slices, raspberries, and mint leaves. Serve immediately.