In a blender, combine 1 cup of freshly squeezed lemon juice or your favorite lemonade, 2 cups of creamy vanilla ice cream, and ½ cup of cold water. Blend on high speed for about 30-45 seconds until smooth.

Check the texture; it should be thick yet pourable. Add more cold water if it's too thick, then blend briefly to mix.

Chill your serving glasses in the freezer for about 5 minutes.

Pour the frosted lemonade into chilled glasses, filling them three-quarters full. Garnish with a slice of lemon or a sprig of mint.

Enjoy your frosted lemonade with a straw or spoon.