# Steps:
01 - Place ice cubes, cold water, freshly squeezed lemon juice, granulated sugar, and blue raspberry syrup into a blender.
02 - Blend ingredients on high speed until the mixture reaches a smooth, slushie texture.
03 - Taste and modify sweetness or tartness by adding additional sugar or lemon juice as preferred.
04 - For a decorative touch, moisten rims of serving glasses and dip into blue sanding sugar.
05 - Distribute slushie mixture evenly among prepared glasses, then garnish with lemon slices, raspberries, and mint leaves. Serve immediately.