# Steps:
01 - Add ice cubes, cold water, lemon juice, granulated sugar, and blue raspberry syrup to the blender.
02 - Blend on high speed until the mixture achieves a smooth, slushie consistency.
03 - Taste and modify sweetness or acidity by incorporating additional sugar or lemon juice if necessary.
04 - Moisten rims of serving glasses and dip into blue sanding sugar for a decorative finish.
05 - Distribute the slushie mixture evenly into prepared glasses.
06 - Adorn each glass with lemon slices, fresh raspberries, and mint leaves as desired. Serve immediately.