Begin by gathering all your ingredients: freshly squeezed lemon juice, vanilla ice cream, and cold water. Chill your water with ice cubes.

In a blender, combine 1 cup of lemon juice with 2 cups of vanilla ice cream and 1 cup of ice-cold water. Blend on high speed for about 30 seconds or until smooth.

If the mixture is too thick, add a splash of cold water and blend for another 15-20 seconds. For a thicker drink, add an extra scoop of vanilla ice cream.

Pour the mixture into chilled glasses and garnish with a slice of lemon or mint if desired. Serve immediately.